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* SegFault on 9.6.14
@ 2019-07-15 23:48 Jerry Sievers <gsievers19@comcast.net>
0 siblings, 1 reply; 307+ messages in thread
From: Jerry Sievers @ 2019-07-15 23:48 UTC (permalink / raw)
To: pgsql-hackers
Greetings Hackers.
We have a reproduceable case of $subject that issues a backtrace such as
seen below.
The query that I'd prefer to sanitize before sending is <30 lines of at
a glance, not terribly complex logic.
It nonetheless dies hard after a few seconds of running and as expected,
results in an automatic all-backend restart.
Please advise on how to proceed. Thanks!
bt
#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
#1 0x000055d7a72fa8d0 in heap_rescan (scan=0x55d7a7daa0b0, key=key@entry=0x0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1529
#2 0x000055d7a7451fef in ExecReScanSeqScan (node=node@entry=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:280
#3 0x000055d7a742d36e in ExecReScan (node=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:158
#4 0x000055d7a7445d38 in ExecReScanGather (node=node@entry=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:475
#5 0x000055d7a742d255 in ExecReScan (node=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:166
#6 0x000055d7a7448673 in ExecReScanHashJoin (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeHashjoin.c:1019
#7 0x000055d7a742d29e in ExecReScan (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:226
<about 30 lines omitted>
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 00:15 Tomas Vondra <tomas.vondra@2ndquadrant.com>
parent: Jerry Sievers <gsievers19@comcast.net>
0 siblings, 1 reply; 307+ messages in thread
From: Tomas Vondra @ 2019-07-16 00:15 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: pgsql-hackers
On Mon, Jul 15, 2019 at 06:48:05PM -0500, Jerry Sievers wrote:
>Greetings Hackers.
>
>We have a reproduceable case of $subject that issues a backtrace such as
>seen below.
>
>The query that I'd prefer to sanitize before sending is <30 lines of at
>a glance, not terribly complex logic.
>
>It nonetheless dies hard after a few seconds of running and as expected,
>results in an automatic all-backend restart.
>
>Please advise on how to proceed. Thanks!
>
>bt
>#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
>#1 0x000055d7a72fa8d0 in heap_rescan (scan=0x55d7a7daa0b0, key=key@entry=0x0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1529
>#2 0x000055d7a7451fef in ExecReScanSeqScan (node=node@entry=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:280
>#3 0x000055d7a742d36e in ExecReScan (node=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:158
>#4 0x000055d7a7445d38 in ExecReScanGather (node=node@entry=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:475
>#5 0x000055d7a742d255 in ExecReScan (node=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:166
>#6 0x000055d7a7448673 in ExecReScanHashJoin (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeHashjoin.c:1019
>#7 0x000055d7a742d29e in ExecReScan (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:226
><about 30 lines omitted>
>
Hmmm, that means it's crashing here:
if (scan->rs_parallel != NULL)
scan->rs_nblocks = scan->rs_parallel->phs_nblocks; <--- here
else
scan->rs_nblocks = RelationGetNumberOfBlocks(scan->rs_rd);
But clearly, scan is valid (otherwise it'd crash on the if condition),
and scan->rs_parallel must me non-NULL. Which probably means the pointer
is (no longer) valid.
Could it be that the rs_parallel DSM disappears on rescan, or something
like that?
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 00:22 Jerry Sievers <gsievers19@comcast.net>
parent: Tomas Vondra <tomas.vondra@2ndquadrant.com>
0 siblings, 1 reply; 307+ messages in thread
From: Jerry Sievers @ 2019-07-16 00:22 UTC (permalink / raw)
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; pgsql-hackers
Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
> On Mon, Jul 15, 2019 at 06:48:05PM -0500, Jerry Sievers wrote:
>
>>Greetings Hackers.
>>
>>We have a reproduceable case of $subject that issues a backtrace such as
>>seen below.
>>
>>The query that I'd prefer to sanitize before sending is <30 lines of at
>>a glance, not terribly complex logic.
>>
>>It nonetheless dies hard after a few seconds of running and as expected,
>>results in an automatic all-backend restart.
>>
>>Please advise on how to proceed. Thanks!
>>
>>bt
>>#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
>> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
>>#1 0x000055d7a72fa8d0 in heap_rescan (scan=0x55d7a7daa0b0, key=key@entry=0x0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1529
>>#2 0x000055d7a7451fef in ExecReScanSeqScan (node=node@entry=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:280
>>#3 0x000055d7a742d36e in ExecReScan (node=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:158
>>#4 0x000055d7a7445d38 in ExecReScanGather (node=node@entry=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:475
>>#5 0x000055d7a742d255 in ExecReScan (node=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:166
>>#6 0x000055d7a7448673 in ExecReScanHashJoin (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeHashjoin.c:1019
>>#7 0x000055d7a742d29e in ExecReScan (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:226
>><about 30 lines omitted>
>>
>
> Hmmm, that means it's crashing here:
>
> if (scan->rs_parallel != NULL)
> scan->rs_nblocks = scan->rs_parallel->phs_nblocks; <--- here
> else
> scan->rs_nblocks = RelationGetNumberOfBlocks(scan->rs_rd);
>
> But clearly, scan is valid (otherwise it'd crash on the if condition),
> and scan->rs_parallel must me non-NULL. Which probably means the pointer
> is (no longer) valid.
>
> Could it be that the rs_parallel DSM disappears on rescan, or something
> like that?
No clue but something I just tried was to disable parallelism by setting
max_parallel_workers_per_gather to 0 and however the query has not
finished after a few minutes, there is no crash.
Please advise.
Thx
>
>
> regards
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 00:34 Tomas Vondra <tomas.vondra@2ndquadrant.com>
parent: Jerry Sievers <gsievers19@comcast.net>
0 siblings, 1 reply; 307+ messages in thread
From: Tomas Vondra @ 2019-07-16 00:34 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: pgsql-hackers
On Mon, Jul 15, 2019 at 07:22:55PM -0500, Jerry Sievers wrote:
>Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
>
>> On Mon, Jul 15, 2019 at 06:48:05PM -0500, Jerry Sievers wrote:
>>
>>>Greetings Hackers.
>>>
>>>We have a reproduceable case of $subject that issues a backtrace such as
>>>seen below.
>>>
>>>The query that I'd prefer to sanitize before sending is <30 lines of at
>>>a glance, not terribly complex logic.
>>>
>>>It nonetheless dies hard after a few seconds of running and as expected,
>>>results in an automatic all-backend restart.
>>>
>>>Please advise on how to proceed. Thanks!
>>>
>>>bt
>>>#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
>>> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
>>>#1 0x000055d7a72fa8d0 in heap_rescan (scan=0x55d7a7daa0b0, key=key@entry=0x0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1529
>>>#2 0x000055d7a7451fef in ExecReScanSeqScan (node=node@entry=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:280
>>>#3 0x000055d7a742d36e in ExecReScan (node=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:158
>>>#4 0x000055d7a7445d38 in ExecReScanGather (node=node@entry=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:475
>>>#5 0x000055d7a742d255 in ExecReScan (node=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:166
>>>#6 0x000055d7a7448673 in ExecReScanHashJoin (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeHashjoin.c:1019
>>>#7 0x000055d7a742d29e in ExecReScan (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:226
>>><about 30 lines omitted>
>>>
>>
>> Hmmm, that means it's crashing here:
>>
>> if (scan->rs_parallel != NULL)
>> scan->rs_nblocks = scan->rs_parallel->phs_nblocks; <--- here
>> else
>> scan->rs_nblocks = RelationGetNumberOfBlocks(scan->rs_rd);
>>
>> But clearly, scan is valid (otherwise it'd crash on the if condition),
>> and scan->rs_parallel must me non-NULL. Which probably means the pointer
>> is (no longer) valid.
>>
>> Could it be that the rs_parallel DSM disappears on rescan, or something
>> like that?
>
>No clue but something I just tried was to disable parallelism by setting
>max_parallel_workers_per_gather to 0 and however the query has not
>finished after a few minutes, there is no crash.
>
That might be a hint my rough analysis was somewhat correct. The
question is whether the non-parallel plan does the same thing. Maybe it
picks a plan that does not require rescans, or something like that.
>Please advise.
>
It would be useful to see (a) exacution plan of the query, (b) full
backtrace and (c) a bit of context for the place where it crashed.
Something like (in gdb):
bt full
list
p *scan
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 01:20 Jerry Sievers <gsievers19@comcast.net>
parent: Tomas Vondra <tomas.vondra@2ndquadrant.com>
0 siblings, 1 reply; 307+ messages in thread
From: Jerry Sievers @ 2019-07-16 01:20 UTC (permalink / raw)
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; pgsql-hackers
Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
> On Mon, Jul 15, 2019 at 07:22:55PM -0500, Jerry Sievers wrote:
>
>>Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
>>
>>> On Mon, Jul 15, 2019 at 06:48:05PM -0500, Jerry Sievers wrote:
>>>
>>>>Greetings Hackers.
>>>>
>>>>We have a reproduceable case of $subject that issues a backtrace such as
>>>>seen below.
>>>>
>>>>The query that I'd prefer to sanitize before sending is <30 lines of at
>>>>a glance, not terribly complex logic.
>>>>
>>>>It nonetheless dies hard after a few seconds of running and as expected,
>>>>results in an automatic all-backend restart.
>>>>
>>>>Please advise on how to proceed. Thanks!
>>>>
>>>>bt
>>>>#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
>>>> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
>>>>#1 0x000055d7a72fa8d0 in heap_rescan (scan=0x55d7a7daa0b0, key=key@entry=0x0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1529
>>>>#2 0x000055d7a7451fef in ExecReScanSeqScan (node=node@entry=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:280
>>>>#3 0x000055d7a742d36e in ExecReScan (node=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:158
>>>>#4 0x000055d7a7445d38 in ExecReScanGather (node=node@entry=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:475
>>>>#5 0x000055d7a742d255 in ExecReScan (node=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:166
>>>>#6 0x000055d7a7448673 in ExecReScanHashJoin (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeHashjoin.c:1019
>>>>#7 0x000055d7a742d29e in ExecReScan (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:226
>>>><about 30 lines omitted>
>>>>
>>>
>>> Hmmm, that means it's crashing here:
>>>
>>> if (scan->rs_parallel != NULL)
>>> scan->rs_nblocks = scan->rs_parallel->phs_nblocks; <--- here
>>> else
>>> scan->rs_nblocks = RelationGetNumberOfBlocks(scan->rs_rd);
>>>
>>> But clearly, scan is valid (otherwise it'd crash on the if condition),
>>> and scan->rs_parallel must me non-NULL. Which probably means the pointer
>>> is (no longer) valid.
>>>
>>> Could it be that the rs_parallel DSM disappears on rescan, or something
>>> like that?
>>
>>No clue but something I just tried was to disable parallelism by setting
>>max_parallel_workers_per_gather to 0 and however the query has not
>>finished after a few minutes, there is no crash.
>>
>
> That might be a hint my rough analysis was somewhat correct. The
> question is whether the non-parallel plan does the same thing. Maybe it
> picks a plan that does not require rescans, or something like that.
>
>>Please advise.
>>
>
> It would be useful to see (a) exacution plan of the query, (b) full
> backtrace and (c) a bit of context for the place where it crashed.
>
> Something like (in gdb):
>
> bt full
> list
> p *scan
The p *scan did nothing unless I ran it first however my gdb $foo isn't
strong presently.
I'll need to sanitize the explain output but can do so ASAP and send it
along.
Thx!
$ gdb /usr/lib/postgresql/9.6/bin/postgres core
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html;
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/;.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/;.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/lib/postgresql/9.6/bin/postgres...Reading symbols from /usr/lib/debug/.build-id/04/6f55a5ce6ce05064edfc8feee61c6cb039d296.debug...done.
done.
[New LWP 31654]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `postgres: foo_eis_segfault: jsievers staging 10.220.22.26(57948) SELECT '.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
233 /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c: No such file or directory.
(gdb) p *scan
$1 = {rs_rd = 0x7fa6c6935a08, rs_snapshot = 0x55d7a7c2e630, rs_nkeys = 0, rs_key = 0x0, rs_bitmapscan = 0 '\000', rs_samplescan = 0 '\000', rs_pageatatime = 1 '\001',
rs_allow_strat = 1 '\001', rs_allow_sync = 1 '\001', rs_temp_snap = 1 '\001', rs_nblocks = 198714, rs_startblock = 1920300133, rs_numblocks = 4294967295, rs_strategy = 0x55d7a7daa6a0,
rs_syncscan = 1 '\001', rs_inited = 0 '\000', rs_ctup = {t_len = 114, t_self = {ip_blkid = {bi_hi = 0, bi_lo = 62879}, ip_posid = 77}, t_tableOid = 994804890, t_data = 0x0},
rs_cblock = 4294967295, rs_cbuf = 0, rs_parallel = 0x7fa673a54108, rs_cindex = 76, rs_ntuples = 77, rs_vistuples = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66,
67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 28255, 25711, 24421, 25705, 12576, 8247, 29754, 29281, 25959, 27764, 29545, 8308, 31528, 16724, 18258, 21573, 20037, 21076,
8281, 25914, 28792, 8306, 22139, 21057, 14880, 24950, 28274, 8303, 12337, 14880, 24950, 24946, 29812, 28526, 13088, 14880, 24950, 29810, 28793, 8293, 13106, 14880, 24950, 29810, 28793,
28525, 8292, 12589, 14880, 24950, 25458, 27759, 26988, 8292, 8240, 30266, 29281, 25964, 25974, 29548, 28789, 12320, 14880, 24950, 28274, 28527, 25708, 12576, 8240, 30266, 29281, 24943,
29812, 28526, 13088, 14880, 28524, 24931, 26996, 28271, 13344, 13110, 8317, 29242, 29541, 28526, 12576, 14880, 25970, 28275, 28001, 8293, 15932, 14880, 25970, 29555, 29295, 26484,
28530, 28789, 25970, 8294, 8240, 29242, 29541, 29295, 26473, 25204, 8300, 8240, 29242, 29541, 29295, 26473, 28515, 8300, 8240, 29242, 29541...}}
(gdb) bt full
#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
allow_strat = <optimized out>
allow_sync = <optimized out>
#1 0x000055d7a72fa8d0 in heap_rescan (scan=0x55d7a7daa0b0, key=key@entry=0x0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1529
__func__ = "heap_rescan"
#2 0x000055d7a7451fef in ExecReScanSeqScan (node=node@entry=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:280
scan = <optimized out>
#3 0x000055d7a742d36e in ExecReScan (node=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:158
__func__ = "ExecReScan"
#4 0x000055d7a7445d38 in ExecReScanGather (node=node@entry=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:475
No locals.
#5 0x000055d7a742d255 in ExecReScan (node=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:166
__func__ = "ExecReScan"
#6 0x000055d7a7448673 in ExecReScanHashJoin (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeHashjoin.c:1019
No locals.
#7 0x000055d7a742d29e in ExecReScan (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:226
__func__ = "ExecReScan"
#8 0x000055d7a7433ce7 in ExecProcNode (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:381
result = <optimized out>
__func__ = "ExecProcNode"
#9 0x000055d7a7452989 in ExecSort (node=node@entry=0x55d7a7d83ea0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSort.c:103
plannode = <optimized out>
outerNode = 0x55d7a7d84110
tupDesc = <optimized out>
estate = 0x55d7a7d5fee8
dir = ForwardScanDirection
tuplesortstate = 0x55d7a7dd2448
slot = <optimized out>
#10 0x000055d7a7433de8 in ExecProcNode (node=0x55d7a7d83ea0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:495
result = <optimized out>
__func__ = "ExecProcNode"
#11 0x000055d7a743ffe9 in fetch_input_tuple (aggstate=aggstate@entry=0x55d7a7d83528) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeAgg.c:598
slot = <optimized out>
#12 0x000055d7a7441bb3 in agg_retrieve_direct (aggstate=0x55d7a7d83528) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeAgg.c:2078
econtext = 0x55d7a7d838b0
pergroup = 0x55d7a7d8e758
firstSlot = 0x55d7a7d83960
numGroupingSets = 1
node = 0x7fa6c68a5da8
tmpcontext = 0x55d7a7d83750
peragg = 0x55d7a7d8d6b8
outerslot = <optimized out>
nextSetSize = <optimized out>
result = <optimized out>
hasGroupingSets = 0 '\000'
currentSet = <optimized out>
numReset = 1
i = <optimized out>
---Type <return> to continue, or q <return> to quit---
#13 ExecAgg (node=node@entry=0x55d7a7d83528) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeAgg.c:1903
result = <optimized out>
#14 0x000055d7a7433dc8 in ExecProcNode (node=node@entry=0x55d7a7d83528) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:503
result = <optimized out>
__func__ = "ExecProcNode"
#15 0x000055d7a744af74 in ExecLimit (node=node@entry=0x55d7a7d83288) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeLimit.c:91
direction = ForwardScanDirection
slot = <optimized out>
outerPlan = 0x55d7a7d83528
__func__ = "ExecLimit"
#16 0x000055d7a7433d28 in ExecProcNode (node=node@entry=0x55d7a7d83288) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:531
result = <optimized out>
__func__ = "ExecProcNode"
#17 0x000055d7a744ff69 in ExecNestLoop (node=node@entry=0x55d7a7d60cd0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeNestloop.c:174
nl = 0x7fa6c68a6048
innerPlan = 0x55d7a7d83288
outerPlan = 0x55d7a7d610c0
outerTupleSlot = <optimized out>
innerTupleSlot = <optimized out>
joinqual = 0x0
otherqual = 0x0
econtext = 0x55d7a7d60de0
lc = <optimized out>
#18 0x000055d7a7433e28 in ExecProcNode (node=node@entry=0x55d7a7d60cd0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:476
result = <optimized out>
__func__ = "ExecProcNode"
#19 0x000055d7a7452989 in ExecSort (node=node@entry=0x55d7a7d60a60) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSort.c:103
plannode = <optimized out>
outerNode = 0x55d7a7d60cd0
tupDesc = <optimized out>
estate = 0x55d7a7d5fee8
dir = ForwardScanDirection
tuplesortstate = 0x55d7a7d98398
slot = <optimized out>
#20 0x000055d7a7433de8 in ExecProcNode (node=0x55d7a7d60a60) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:495
result = <optimized out>
__func__ = "ExecProcNode"
#21 0x000055d7a743ffe9 in fetch_input_tuple (aggstate=aggstate@entry=0x55d7a7d60088) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeAgg.c:598
slot = <optimized out>
#22 0x000055d7a7441bb3 in agg_retrieve_direct (aggstate=0x55d7a7d60088) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeAgg.c:2078
econtext = 0x55d7a7d60440
pergroup = 0x55d7a7d91230
firstSlot = 0x55d7a7d604f0
numGroupingSets = 1
node = 0x7fa6c68a6328
tmpcontext = 0x55d7a7d602b0
peragg = 0x55d7a7d90190
outerslot = <optimized out>
nextSetSize = <optimized out>
---Type <return> to continue, or q <return> to quit---
result = <optimized out>
hasGroupingSets = 0 '\000'
currentSet = <optimized out>
numReset = 1
i = <optimized out>
#23 ExecAgg (node=node@entry=0x55d7a7d60088) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeAgg.c:1903
result = <optimized out>
#24 0x000055d7a7433dc8 in ExecProcNode (node=node@entry=0x55d7a7d60088) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:503
result = <optimized out>
__func__ = "ExecProcNode"
#25 0x000055d7a742ff2e in ExecutePlan (dest=0x7fa673a96308, direction=<optimized out>, numberTuples=0, sendTuples=<optimized out>, operation=CMD_SELECT, use_parallel_mode=<optimized out>,
planstate=0x55d7a7d60088, estate=0x55d7a7d5fee8) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execMain.c:1567
slot = <optimized out>
current_tuple_count = 0
#26 standard_ExecutorRun (queryDesc=0x55d7a7d54718, direction=<optimized out>, count=0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execMain.c:339
estate = 0x55d7a7d5fee8
operation = CMD_SELECT
dest = 0x7fa673a96308
sendTuples = <optimized out>
#27 0x00007fa6c7027515 in explain_ExecutorRun (queryDesc=0x55d7a7d54718, direction=ForwardScanDirection, count=0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../contrib/auto_explain/auto_explain.c:281
save_exception_stack = 0x7fff4aeeaa80
save_context_stack = 0x0
local_sigjmp_buf = {{__jmpbuf = {94384722106264, 8229023444991490729, 0, 94384722102040, 0, 1, 8229023444890827433, 8250672449167702697}, __mask_was_saved = 0, __saved_mask = {
__val = {94384721739856, 140734450543072, 94384714940022, 140354273004312, 140354273004312, 140734450543104, 94384714691234, 2, 2, 140734450543200, 94384711690034, 2,
3462443396, 8388608, 3547611511646930944, 140734450543200}}}}
#28 0x00007fa6c6e1fdb0 in pgss_ExecutorRun (queryDesc=0x55d7a7d54718, direction=ForwardScanDirection, count=0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../contrib/pg_stat_statements/pg_stat_statements.c:875
save_exception_stack = 0x7fff4aeeac20
save_context_stack = 0x0
local_sigjmp_buf = {{__jmpbuf = {94384722106264, 8229023444960033449, 0, 94384722102040, 0, 1, 8229023444993587881, 8250670555334589097}, __mask_was_saved = 0, __saved_mask = {
__val = {4294967296, 140354272256808, 94384714928429, 16, 94384719269552, 24, 94384720895528, 94384722102040, 0, 140734450543408, 94384714928429, 94384722106264,
94384720895528, 140734450543440, 94384714994982, 94384722106264}}}}
#29 0x000055d7a7553167 in PortalRunSelect (portal=portal@entry=0x55d7a7d55798, forward=forward@entry=1 '\001', count=0, count@entry=9223372036854775807, dest=dest@entry=0x7fa673a96308)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/tcop/pquery.c:948
queryDesc = 0x55d7a7d54718
direction = <optimized out>
nprocessed = <optimized out>
__func__ = "PortalRunSelect"
#30 0x000055d7a75547a0 in PortalRun (portal=portal@entry=0x55d7a7d55798, count=count@entry=9223372036854775807, isTopLevel=isTopLevel@entry=1 '\001', dest=dest@entry=0x7fa673a96308,
altdest=altdest@entry=0x7fa673a96308, completionTag=completionTag@entry=0x7fff4aeeb050 "") at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/tcop/pquery.c:789
save_exception_stack = 0x7fff4aeeaf00
save_context_stack = 0x0
local_sigjmp_buf = {{__jmpbuf = {94384721085312, 8229023445033433769, 94384722106264, 140352881779464, 94384721085584, 2, 8229023444955839145, 2765920793019169449},
__mask_was_saved = 0, __saved_mask = {__val = {0, 12099560782865280144, 0, 8, 8, 140734450544226, 1, 88, 94384722106264, 94384715935530, 94384721085584, 140734450543840,
94384714930017, 2, 94384722106264, 140734450543872}}}}
result = <optimized out>
nprocessed = <optimized out>
saveTopTransactionResourceOwner = 0x55d7a7c118e8
---Type <return> to continue, or q <return> to quit---
saveTopTransactionContext = 0x55d7a7c10eb8
saveActivePortal = 0x0
saveResourceOwner = 0x55d7a7c118e8
savePortalContext = 0x0
saveMemoryContext = 0x55d7a7c10eb8
__func__ = "PortalRun"
#31 0x000055d7a75512d6 in exec_simple_query (
query_string=0x55d7a7ce6b38 "select v.account_id, COUNT(cnt.clicks), te.description,\nl.product_id\nfrom nbox_nc_ah.tracking_events te\njoin nbox_nc_ah.page_views pv on pv.page_view_id = te.page_view_id\njoin nbox_nc_ah.visits v on v"...) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/tcop/postgres.c:1109
parsetree = 0x55d7a7c5c380
portal = 0x55d7a7d55798
snapshot_set = <optimized out>
commandTag = <optimized out>
completionTag = "\000\370\253\247\327U\000\000\240F\252\247\327U\000\000\200\260\356J\377\177\000\000\215\326g\247\327U\000\000\300\260\356J\377\177\000\000d\261\356J\377\177\000\000\240\260\356J\377\177\000\000v\031F\247\327U\000"
querytree_list = <optimized out>
plantree_list = 0x7fa673a962d8
receiver = 0x7fa673a96308
format = 0
dest = DestRemote
parsetree_list = 0x55d7a7c5c4b0
save_log_statement_stats = 0 '\000'
was_logged = 0 '\000'
msec_str = "\020\261\356J\377\177\000\000(\002", '\000' <repeats 14 times>, "\340?\256\247\327U\000"
parsetree_item = 0x55d7a7c5c490
isTopLevel = 1 '\001'
#32 PostgresMain (argc=<optimized out>, argv=argv@entry=0x55d7a7c56830, dbname=0x55d7a7c11b88 "staging", username=<optimized out>)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/tcop/postgres.c:4101
query_string = 0x55d7a7ce6b38 "select v.account_id, COUNT(cnt.clicks), te.description,\nl.product_id\nfrom nbox_nc_ah.tracking_events te\njoin nbox_nc_ah.page_views pv on pv.page_view_id = te.page_view_id\njoin nbox_nc_ah.visits v on v"...
firstchar = -1479190632
input_message = {
data = 0x55d7a7ce6b38 "select v.account_id, COUNT(cnt.clicks), te.description,\nl.product_id\nfrom nbox_nc_ah.tracking_events te\njoin nbox_nc_ah.page_views pv on pv.page_view_id = te.page_view_id\njoin nbox_nc_ah.visits v on v"..., len = 1042, maxlen = 2048, cursor = 1042}
local_sigjmp_buf = {{__jmpbuf = {140734450544288, 8229023445169748649, 94384721061936, 1, 94384721061720, 94384721052928, 8229023445035530921, 2765920790734322345},
__mask_was_saved = 1, __saved_mask = {__val = {0, 94386201296895, 94384713689589, 18446603339259007057, 140354407146656, 0, 1305670059009, 32, 4, 489626271867, 0, 0,
532575944823, 140734450544608, 0, 140734450544704}}}}
send_ready_for_query = 0 '\000'
disable_idle_in_transaction_timeout = <optimized out>
__func__ = "PostgresMain"
#33 0x000055d7a72c6a1b in BackendRun (port=0x55d7a7c54500) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/postmaster/postmaster.c:4339
ac = 1
secs = 616545808
usecs = 503344
i = 1
av = 0x55d7a7c56830
maxac = <optimized out>
#34 BackendStartup (port=0x55d7a7c54500) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/postmaster/postmaster.c:4013
bn = <optimized out>
---Type <return> to continue, or q <return> to quit---
pid = <optimized out>
#35 ServerLoop () at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/postmaster/postmaster.c:1722
rmask = {fds_bits = {16, 0 <repeats 15 times>}}
selres = <optimized out>
now = <optimized out>
readmask = {fds_bits = {48, 0 <repeats 15 times>}}
last_lockfile_recheck_time = 1563230588
last_touch_time = 1563230588
__func__ = "ServerLoop"
#36 0x000055d7a74ed281 in PostmasterMain (argc=13, argv=<optimized out>) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/postmaster/postmaster.c:1330
opt = <optimized out>
status = <optimized out>
userDoption = <optimized out>
listen_addr_saved = 1 '\001'
i = <optimized out>
output_config_variable = <optimized out>
__func__ = "PostmasterMain"
#37 0x000055d7a72c7bf1 in main (argc=13, argv=0x55d7a7c0f840) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/main/main.c:228
No locals.
(gdb) list
228 in /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c
(gdb)
>
>
>
> regards
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 08:22 Tomas Vondra <tomas.vondra@2ndquadrant.com>
parent: Jerry Sievers <gsievers19@comcast.net>
0 siblings, 2 replies; 307+ messages in thread
From: Tomas Vondra @ 2019-07-16 08:22 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: pgsql-hackers
On Mon, Jul 15, 2019 at 08:20:00PM -0500, Jerry Sievers wrote:
>Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
>
>> On Mon, Jul 15, 2019 at 07:22:55PM -0500, Jerry Sievers wrote:
>>
>>>Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
>>>
>>>> On Mon, Jul 15, 2019 at 06:48:05PM -0500, Jerry Sievers wrote:
>>>>
>>>>>Greetings Hackers.
>>>>>
>>>>>We have a reproduceable case of $subject that issues a backtrace such as
>>>>>seen below.
>>>>>
>>>>>The query that I'd prefer to sanitize before sending is <30 lines of at
>>>>>a glance, not terribly complex logic.
>>>>>
>>>>>It nonetheless dies hard after a few seconds of running and as expected,
>>>>>results in an automatic all-backend restart.
>>>>>
>>>>>Please advise on how to proceed. Thanks!
>>>>>
>>>>>bt
>>>>>#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
>>>>> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
>>>>>#1 0x000055d7a72fa8d0 in heap_rescan (scan=0x55d7a7daa0b0, key=key@entry=0x0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1529
>>>>>#2 0x000055d7a7451fef in ExecReScanSeqScan (node=node@entry=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:280
>>>>>#3 0x000055d7a742d36e in ExecReScan (node=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:158
>>>>>#4 0x000055d7a7445d38 in ExecReScanGather (node=node@entry=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:475
>>>>>#5 0x000055d7a742d255 in ExecReScan (node=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:166
>>>>>#6 0x000055d7a7448673 in ExecReScanHashJoin (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeHashjoin.c:1019
>>>>>#7 0x000055d7a742d29e in ExecReScan (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:226
>>>>><about 30 lines omitted>
>>>>>
>>>>
>>>> Hmmm, that means it's crashing here:
>>>>
>>>> if (scan->rs_parallel != NULL)
>>>> scan->rs_nblocks = scan->rs_parallel->phs_nblocks; <--- here
>>>> else
>>>> scan->rs_nblocks = RelationGetNumberOfBlocks(scan->rs_rd);
>>>>
>>>> But clearly, scan is valid (otherwise it'd crash on the if condition),
>>>> and scan->rs_parallel must me non-NULL. Which probably means the pointer
>>>> is (no longer) valid.
>>>>
>>>> Could it be that the rs_parallel DSM disappears on rescan, or something
>>>> like that?
>>>
>>>No clue but something I just tried was to disable parallelism by setting
>>>max_parallel_workers_per_gather to 0 and however the query has not
>>>finished after a few minutes, there is no crash.
>>>
>>
>> That might be a hint my rough analysis was somewhat correct. The
>> question is whether the non-parallel plan does the same thing. Maybe it
>> picks a plan that does not require rescans, or something like that.
>>
>>>Please advise.
>>>
>>
>> It would be useful to see (a) exacution plan of the query, (b) full
>> backtrace and (c) a bit of context for the place where it crashed.
>>
>> Something like (in gdb):
>>
>> bt full
>> list
>> p *scan
>
>The p *scan did nothing unless I ran it first however my gdb $foo isn't
>strong presently.
Hmm, the rs_parallel pointer looks sane (it's not obvious garbage). Can
you try this?
p *scan->rs_parallel
Another question - are you sure this is not an OOM issue? That might
sometimes look like SIGSEGV due to overcommit. What's the memory
consumption / is there anything in dmesg?
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 10:42 Thomas Munro <thomas.munro@gmail.com>
parent: Tomas Vondra <tomas.vondra@2ndquadrant.com>
1 sibling, 0 replies; 307+ messages in thread
From: Thomas Munro @ 2019-07-16 10:42 UTC (permalink / raw)
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; pgsql-hackers
On Tue, Jul 16, 2019 at 8:22 PM Tomas Vondra
<tomas.vondra@2ndquadrant.com> wrote:
> On Mon, Jul 15, 2019 at 08:20:00PM -0500, Jerry Sievers wrote:
> >>>>>We have a reproduceable case of $subject that issues a backtrace such as
> >>>>>seen below.
> >>>>>#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
> >>>>> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
> >>>>>#1 0x000055d7a72fa8d0 in heap_rescan (scan=0x55d7a7daa0b0, key=key@entry=0x0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1529
> >>>>>#2 0x000055d7a7451fef in ExecReScanSeqScan (node=node@entry=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:280
> >>>>>#3 0x000055d7a742d36e in ExecReScan (node=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:158
> >>>>>#4 0x000055d7a7445d38 in ExecReScanGather (node=node@entry=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:475
> >>>>>#5 0x000055d7a742d255 in ExecReScan (node=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:166
Here's a query that rescans a gather node repeatedly on 9.6 in case it
helps someone build a repro, but it works fine here.
--
Thomas Munro
https://enterprisedb.com
Attachments:
[application/sql] test.sql (899B, ../../CA+hUKGJxUOSfJVhktD6M6ewotdN0azXLtyk4yEc-qnftaKEe3g@mail.gmail.com/2-test.sql)
download
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 23:05 Jerry Sievers <gsievers19@comcast.net>
parent: Tomas Vondra <tomas.vondra@2ndquadrant.com>
1 sibling, 1 reply; 307+ messages in thread
From: Jerry Sievers @ 2019-07-16 23:05 UTC (permalink / raw)
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; pgsql-hackers
Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
> On Mon, Jul 15, 2019 at 08:20:00PM -0500, Jerry Sievers wrote:
>
>>Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
>>
>>> On Mon, Jul 15, 2019 at 07:22:55PM -0500, Jerry Sievers wrote:
>>>
>>>>Tomas Vondra <tomas.vondra@2ndquadrant.com> writes:
>>>>
>>>>> On Mon, Jul 15, 2019 at 06:48:05PM -0500, Jerry Sievers wrote:
>>>>>
>>>>>>Greetings Hackers.
>>>>>>
>>>>>>We have a reproduceable case of $subject that issues a backtrace such as
>>>>>>seen below.
>>>>>>
>>>>>>The query that I'd prefer to sanitize before sending is <30 lines of at
>>>>>>a glance, not terribly complex logic.
>>>>>>
>>>>>>It nonetheless dies hard after a few seconds of running and as expected,
>>>>>>results in an automatic all-backend restart.
>>>>>>
>>>>>>Please advise on how to proceed. Thanks!
>>>>>>
>>>>>>bt
>>>>>>#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
>>>>>> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
>>>>>>#1 0x000055d7a72fa8d0 in heap_rescan (scan=0x55d7a7daa0b0, key=key@entry=0x0) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1529
>>>>>>#2 0x000055d7a7451fef in ExecReScanSeqScan (node=node@entry=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:280
>>>>>>#3 0x000055d7a742d36e in ExecReScan (node=0x55d7a7d85100) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:158
>>>>>>#4 0x000055d7a7445d38 in ExecReScanGather (node=node@entry=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:475
>>>>>>#5 0x000055d7a742d255 in ExecReScan (node=0x55d7a7d84d30) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:166
>>>>>>#6 0x000055d7a7448673 in ExecReScanHashJoin (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeHashjoin.c:1019
>>>>>>#7 0x000055d7a742d29e in ExecReScan (node=node@entry=0x55d7a7d84110) at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execAmi.c:226
>>>>>><about 30 lines omitted>
>>>>>>
>>>>>
>>>>> Hmmm, that means it's crashing here:
>>>>>
>>>>> if (scan->rs_parallel != NULL)
>>>>> scan->rs_nblocks = scan->rs_parallel->phs_nblocks; <--- here
>>>>> else
>>>>> scan->rs_nblocks = RelationGetNumberOfBlocks(scan->rs_rd);
>>>>>
>>>>> But clearly, scan is valid (otherwise it'd crash on the if condition),
>>>>> and scan->rs_parallel must me non-NULL. Which probably means the pointer
>>>>> is (no longer) valid.
>>>>>
>>>>> Could it be that the rs_parallel DSM disappears on rescan, or something
>>>>> like that?
>>>>
>>>>No clue but something I just tried was to disable parallelism by setting
>>>>max_parallel_workers_per_gather to 0 and however the query has not
>>>>finished after a few minutes, there is no crash.
>>>>
>>>
>>> That might be a hint my rough analysis was somewhat correct. The
>>> question is whether the non-parallel plan does the same thing. Maybe it
>>> picks a plan that does not require rescans, or something like that.
>>>
>>>>Please advise.
>>>>
>>>
>>> It would be useful to see (a) exacution plan of the query, (b) full
>>> backtrace and (c) a bit of context for the place where it crashed.
>>>
>>> Something like (in gdb):
>>>
>>> bt full
>>> list
>>> p *scan
>>
>>The p *scan did nothing unless I ran it first however my gdb $foo isn't
>>strong presently.
>
> Hmm, the rs_parallel pointer looks sane (it's not obvious garbage). Can
> you try this?
>
> p *scan->rs_parallel
$ gdb /usr/lib/postgresql/9.6/bin/postgres core
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html;
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/;.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/;.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/lib/postgresql/9.6/bin/postgres...Reading symbols from /usr/lib/debug/.build-id/04/6f55a5ce6ce05064edfc8feee61c6cb039d296.debug...done.
done.
[New LWP 31654]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `postgres: foo_eis_segfault: jsievers staging 10.220.22.26(57948) SELECT '.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 initscan (scan=scan@entry=0x55d7a7daa0b0, key=0x0, keep_startblock=keep_startblock@entry=1 '\001')
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:233
233 /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c: No such file or directory.
(gdb) p *scan->rs_parallel
Cannot access memory at address 0x7fa673a54108
(gdb)
>
> Another question - are you sure this is not an OOM issue? That might
> sometimes look like SIGSEGV due to overcommit. What's the memory
> consumption / is there anything in dmesg?
Below is all I got after a prior dmesg -c...
dmesg -c
[5441294.442062] postgres[12033]: segfault at 7f3d011d2110 ip 000055666def9a31 sp 00007ffc37be9a70 error 4 in postgres[55666de23000+653000]
Thanks!
>
> regards
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 23:11 Thomas Munro <thomas.munro@gmail.com>
parent: Jerry Sievers <gsievers19@comcast.net>
0 siblings, 3 replies; 307+ messages in thread
From: Thomas Munro @ 2019-07-16 23:11 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
On Wed, Jul 17, 2019 at 11:06 AM Jerry Sievers <gsievers19@comcast.net> wrote:
> (gdb) p *scan->rs_parallel
> Cannot access memory at address 0x7fa673a54108
So I guess one question is: was it a valid address that's been
unexpectedly unmapped, or is the pointer corrupted? Any chance you
can strace the backend and pull out the map, unmap calls?
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 23:13 Thomas Munro <thomas.munro@gmail.com>
parent: Thomas Munro <thomas.munro@gmail.com>
2 siblings, 0 replies; 307+ messages in thread
From: Thomas Munro @ 2019-07-16 23:13 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
On Wed, Jul 17, 2019 at 11:11 AM Thomas Munro <thomas.munro@gmail.com> wrote:
> map, unmap
mmap, munmap
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 23:33 Jerry Sievers <gsievers19@comcast.net>
parent: Thomas Munro <thomas.munro@gmail.com>
2 siblings, 0 replies; 307+ messages in thread
From: Jerry Sievers @ 2019-07-16 23:33 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
Thomas Munro <thomas.munro@gmail.com> writes:
> On Wed, Jul 17, 2019 at 11:06 AM Jerry Sievers <gsievers19@comcast.net> wrote:
>
>> (gdb) p *scan->rs_parallel
>> Cannot access memory at address 0x7fa673a54108
>
> So I guess one question is: was it a valid address that's been
> unexpectedly unmapped, or is the pointer corrupted? Any chance you
> can strace the backend and pull out the map, unmap calls?
I'll dig further.
Here is a sanitized look at the query and explain plan...
The segfault happens $immediately upon issuance of the query.
begin;
-- This setting makes the segfault go away
--set local max_parallel_workers_per_gather to 0;
explain
select v.account_id, COUNT(cnt.clicks), te.description,
l.product_id
from thing3.thing10 te
join thing3.thing9 pv on pv.page_view_id = te.page_view_id
join thing3.thing11 v on v.visit_id = pv.visit_id
left join thing6.thing12 l on v.account_id=l.account_id
left join lateral (
select MAX(v.visit_id)
,COUNT(*) as clicks
from thing3.thing10 te
join thing3.thing9 pv on pv.page_view_id =
te.page_view_id
join thing3.thing11 v on v.visit_id = pv.visit_id
where te.description in ('thing7',
'thing8')
and v.account_id=l.account_id
GROUP BY v.account_id, v.visit_id
order by v.account_id, v.visit_id desc
limit 1
)cnt on true
where (te.description in ('thing4',
'thing5')
or te.description like'%auto%')
and te.created_at > '2019-06-24 00:00:00'
--and l.loan_status_id in (5,6)
group by v.account_id, te.description,
l.product_id;
abort;
BEGIN
QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
GroupAggregate (cost=12300178.71..12300179.79 rows=48 width=44)
Group Key: v.account_id, te.description, l.product_id
-> Sort (cost=12300178.71..12300178.83 rows=48 width=44)
Sort Key: v.account_id, te.description, l.product_id
-> Nested Loop Left Join (cost=251621.81..12300177.37 rows=48 width=44)
-> Gather (cost=1001.55..270403.27 rows=48 width=40)
Workers Planned: 3
-> Nested Loop Left Join (cost=1.56..269398.47 rows=15 width=40)
-> Nested Loop (cost=1.13..269391.71 rows=14 width=32)
-> Nested Loop (cost=0.57..269368.66 rows=39 width=32)
-> Parallel Seq Scan on thing10 te (cost=0.00..269228.36 rows=39 width=32)
Filter: ((created_at > '2019-06-24 00:00:00'::timestamp without time zone) AND (((description)::text = ANY ('{thing4,thing5}'::text[])) OR ((description)::text ~~ '%auto%'::text)))
-> Index Scan using page_views_pkey on thing9 pv (cost=0.57..3.59 rows=1 width=8)
Index Cond: (page_view_id = te.page_view_id)
-> Index Scan using visits_pkey on thing11 v (cost=0.56..0.58 rows=1 width=8)
Index Cond: (visit_id = pv.visit_id)
-> Index Scan using index_loans_on_account_id on thing12 l (cost=0.42..0.46 rows=2 width=8)
Index Cond: (v.account_id = account_id)
-> Limit (cost=250620.25..250620.27 rows=1 width=20)
-> GroupAggregate (cost=250620.25..250620.27 rows=1 width=20)
Group Key: v_1.visit_id
-> Sort (cost=250620.25..250620.26 rows=1 width=8)
Sort Key: v_1.visit_id DESC
-> Hash Join (cost=1154.34..250620.24 rows=1 width=8)
Hash Cond: (te_1.page_view_id = pv_1.page_view_id)
-> Gather (cost=1000.00..250452.00 rows=3706 width=4)
Workers Planned: 3
-> Parallel Seq Scan on thing10 te_1 (cost=0.00..249081.40 rows=1195 width=4)
Filter: ((description)::text = ANY ('{thing7,thing8}'::text[]))
-> Hash (cost=152.85..152.85 rows=119 width=12)
-> Nested Loop (cost=1.01..152.85 rows=119 width=12)
-> Index Scan using index_visits_on_account_id on thing11 v_1 (cost=0.43..15.63 rows=18 width=8)
Index Cond: (account_id = l.account_id)
-> Index Scan using index_pv_on_visit on thing9 pv_1 (cost=0.57..7.55 rows=7 width=8)
Index Cond: (visit_id = v_1.visit_id)
(35 rows)
ROLLBACK
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 23:42 Jerry Sievers <gsievers19@comcast.net>
parent: Thomas Munro <thomas.munro@gmail.com>
2 siblings, 1 reply; 307+ messages in thread
From: Jerry Sievers @ 2019-07-16 23:42 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
Thomas Munro <thomas.munro@gmail.com> writes:
> On Wed, Jul 17, 2019 at 11:06 AM Jerry Sievers <gsievers19@comcast.net> wrote:
>
>> (gdb) p *scan->rs_parallel
>> Cannot access memory at address 0x7fa673a54108
>
> So I guess one question is: was it a valid address that's been
> unexpectedly unmapped, or is the pointer corrupted? Any chance you
> can strace the backend and pull out the map, unmap calls?
There were about 60k lines from strace including these few...
mmap(NULL, 528384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3d0127a000
mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3d01239000
mmap(NULL, 287624, PROT_READ|PROT_WRITE, MAP_SHARED, 124, 0) = 0x7f3d011f2000
mmap(NULL, 262504, PROT_READ|PROT_WRITE, MAP_SHARED, 124, 0) = 0x7f3d011b1000
munmap(0x7f3d011b1000, 262504) = 0
Thx
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-16 23:49 Thomas Munro <thomas.munro@gmail.com>
parent: Jerry Sievers <gsievers19@comcast.net>
0 siblings, 1 reply; 307+ messages in thread
From: Thomas Munro @ 2019-07-16 23:49 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
On Wed, Jul 17, 2019 at 11:33 AM Jerry Sievers <gsievers19@comcast.net> wrote:
> -> Nested Loop Left Join (cost=251621.81..12300177.37 rows=48 width=44)
> -> Gather (cost=1001.55..270403.27 rows=48 width=40)
> -> Limit (cost=250620.25..250620.27 rows=1 width=20)
> -> Gather (cost=1000.00..250452.00 rows=3706 width=4)
One observation is that it's a rescan a bit like the one in the
unsuccessful repro attempt I posted, but it has *two* Gather nodes in
it (and thus two parallel query DSM segments), and only one of them
should be rescanned, and from the backtrace we see that it is indeed
the expected one, the one under the Limit operator. Neither of them
should be getting unmapped in the leader though and AFAIK nothing
happening in the workers could cause this effect, the leader would
have to explicitly unmap the thing AFAIK.
On Wed, Jul 17, 2019 at 11:42 AM Jerry Sievers <gsievers19@comcast.net> wrote:
> mmap(NULL, 287624, PROT_READ|PROT_WRITE, MAP_SHARED, 124, 0) = 0x7f3d011f2000
> mmap(NULL, 262504, PROT_READ|PROT_WRITE, MAP_SHARED, 124, 0) = 0x7f3d011b1000
> munmap(0x7f3d011b1000, 262504) = 0
Ok, there go our two parallel query DSM segments, and there it is
being unmapped. Hmm. Any chance you could attach a debugger, and
"break munmap", "cont", and then show us the backtrace "bt" when that
is reached?
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-17 00:05 Jerry Sievers <gsievers19@comcast.net>
parent: Thomas Munro <thomas.munro@gmail.com>
0 siblings, 1 reply; 307+ messages in thread
From: Jerry Sievers @ 2019-07-17 00:05 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
Thomas Munro <thomas.munro@gmail.com> writes:
> On Wed, Jul 17, 2019 at 11:33 AM Jerry Sievers <gsievers19@comcast.net> wrote:
>
>> -> Nested Loop Left Join (cost=251621.81..12300177.37 rows=48 width=44)
>> -> Gather (cost=1001.55..270403.27 rows=48 width=40)
>
>> -> Limit (cost=250620.25..250620.27 rows=1 width=20)
>
>> -> Gather (cost=1000.00..250452.00 rows=3706 width=4)
>
> One observation is that it's a rescan a bit like the one in the
> unsuccessful repro attempt I posted, but it has *two* Gather nodes in
> it (and thus two parallel query DSM segments), and only one of them
> should be rescanned, and from the backtrace we see that it is indeed
> the expected one, the one under the Limit operator. Neither of them
> should be getting unmapped in the leader though and AFAIK nothing
> happening in the workers could cause this effect, the leader would
> have to explicitly unmap the thing AFAIK.
>
> On Wed, Jul 17, 2019 at 11:42 AM Jerry Sievers <gsievers19@comcast.net> wrote:
>> mmap(NULL, 287624, PROT_READ|PROT_WRITE, MAP_SHARED, 124, 0) = 0x7f3d011f2000
>> mmap(NULL, 262504, PROT_READ|PROT_WRITE, MAP_SHARED, 124, 0) = 0x7f3d011b1000
>> munmap(0x7f3d011b1000, 262504) = 0
>
> Ok, there go our two parallel query DSM segments, and there it is
> being unmapped. Hmm. Any chance you could attach a debugger, and
> "break munmap", "cont", and then show us the backtrace "bt" when that
> is reached?
gdb /usr/lib/postgresql/9.6/bin/postgres 21640
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html;
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/;.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/;.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/lib/postgresql/9.6/bin/postgres...Reading symbols from /usr/lib/debug/.build-id/04/6f55a5ce6ce05064edfc8feee61c6cb039d296.debug...done.
done.
Attaching to program: /usr/lib/postgresql/9.6/bin/postgres, process 21640
Reading symbols from /usr/lib/x86_64-linux-gnu/libxml2.so.2...Reading symbols from /usr/lib/debug/.build-id/d3/57ce1dba1fab803eddf48922123ffd0a303676.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libpam.so.0...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libssl.so.1.0.0...Reading symbols from /usr/lib/debug/.build-id/ff/69ea60ebe05f2dd689d2b26fc85a73e5fbc3a0.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0...Reading symbols from /usr/lib/debug/.build-id/15/ffeb43278726b025f020862bf51302822a40ec.debug...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/librt.so.1...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/librt-2.23.so...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libdl.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libdl-2.23.so...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libm.so.6...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libm-2.23.so...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libldap_r-2.4.so.2...Reading symbols from /usr/lib/debug/.build-id/38/90d33727391e4a85dc0f819ab0aa29bb5dfc86.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libsystemd.so.0...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libc-2.23.so...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libicuuc.so.55...Reading symbols from /usr/lib/debug/.build-id/46/3d8b610702d64ae0803c7dfcaa02cfb4c6477b.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libz.so.1...Reading symbols from /usr/lib/debug/.build-id/8d/9bd4ce26e45ef16075c67d5f5eeafd8b562832.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/liblzma.so.5...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libaudit.so.1...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libkrb5.so.3...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libk5crypto.so.3...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libcom_err.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libcom_err.so.2.1...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libkrb5support.so.0...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libpthread.so.0...Reading symbols from /usr/lib/debug/.build-id/b1/7c21299099640a6d863e423d99265824e7bb16.debug...done.
done.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/ld-2.23.so...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/liblber-2.4.so.2...Reading symbols from /usr/lib/debug/.build-id/8e/613d0b8d8e3537785637424782be8502ababd2.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libresolv.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libresolv-2.23.so...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libsasl2.so.2...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libgssapi.so.3...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libgnutls.so.30...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libselinux.so.1...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libgcrypt.so.20...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libicudata.so.55...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libstdc++.so.6...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libgcc_s.so.1...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libgcc_s.so.1...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libkeyutils.so.1...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libheimntlm.so.0...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libkrb5.so.26...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libasn1.so.8...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libhcrypto.so.4...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libroken.so.18...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libp11-kit.so.0...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libidn.so.11...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libtasn1.so.6...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libnettle.so.6...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libhogweed.so.4...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libgmp.so.10...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libpcre.so.3...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libpcre.so.3.13.2...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libgpg-error.so.0...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libwind.so.0...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libheimbase.so.1...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libhx509.so.5...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0...Reading symbols from /usr/lib/debug/.build-id/3b/0454e57467057071f7ad49651e0fa7b01cf5c7.debug...done.
done.
Reading symbols from /lib/x86_64-linux-gnu/libcrypt.so.1...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libcrypt-2.23.so...done.
done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libffi.so.6...Reading symbols from /usr/lib/debug/.build-id/9d/9c958f1f4894afef6aecd90d1c430ea29ac34f.debug...done.
done.
Reading symbols from /usr/lib/postgresql/9.6/lib/auto_explain.so...Reading symbols from /usr/lib/debug/.build-id/94/ab76178c50b0e098f2bd0f3501d9cb6562c743.debug...done.
done.
Reading symbols from /usr/lib/postgresql/9.6/lib/pg_stat_statements.so...Reading symbols from /usr/lib/debug/.build-id/cf/f288800c22fd97059aaf8e425ae17e29fb88fb.debug...done.
done.
Reading symbols from /usr/lib/postgresql/9.6/lib/pglogical.so...(no debugging symbols found)...done.
Reading symbols from /usr/lib/x86_64-linux-gnu/libpq.so.5...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2...Reading symbols from /usr/lib/debug//lib/x86_64-linux-gnu/libnss_files-2.23.so...done.
done.
0x00007f3d093379f3 in __epoll_wait_nocancel () at ../sysdeps/unix/syscall-template.S:84
84 ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) break munmap
Breakpoint 1 at 0x7f3d09331740: file ../sysdeps/unix/syscall-template.S, line 84.
(gdb) cont
Continuing.
Program received signal SIGUSR1, User defined signal 1.
hash_search_with_hash_value (hashp=0x5566701baa68, keyPtr=keyPtr@entry=0x7ffc37be9790,
hashvalue=hashvalue@entry=1634369601, action=action@entry=HASH_FIND,
foundPtr=foundPtr@entry=0x0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/utils/hash/dynahash.c:959
959 /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/utils/hash/dynahash.c: No such file or directory.
(gdb) bt
#0 hash_search_with_hash_value (hashp=0x5566701baa68, keyPtr=keyPtr@entry=0x7ffc37be9790,
hashvalue=hashvalue@entry=1634369601, action=action@entry=HASH_FIND,
foundPtr=foundPtr@entry=0x0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/utils/hash/dynahash.c:959
#1 0x000055666e1224ca in BufTableLookup (tagPtr=tagPtr@entry=0x7ffc37be9790,
hashcode=hashcode@entry=1634369601)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/storage/buffer/buf_table.c:96
#2 0x000055666e12527d in BufferAlloc (foundPtr=0x7ffc37be978b "", strategy=0x556670360418,
blockNum=53, forkNum=MAIN_FORKNUM, relpersistence=112 'p', smgr=0x5566702a5990)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/storage/buffer/bufmgr.c:1013
#3 ReadBuffer_common (smgr=0x5566702a5990, relpersistence=<optimized out>,
forkNum=forkNum@entry=MAIN_FORKNUM, blockNum=blockNum@entry=53, mode=RBM_NORMAL,
strategy=0x556670360418, hit=0x7ffc37be9837 "")
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/storage/buffer/bufmgr.c:745
#4 0x000055666e125b15 in ReadBufferExtended (reln=0x7f3d015e2670,
forkNum=forkNum@entry=MAIN_FORKNUM, blockNum=blockNum@entry=53,
mode=mode@entry=RBM_NORMAL, strategy=<optimized out>)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/storage/buffer/bufmgr.c:664
#5 0x000055666defc036 in heapgetpage (scan=scan@entry=0x5566703484f8, page=page@entry=53)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:375
#6 0x000055666defd5c2 in heapgettup_pagemode (key=0x0, nkeys=0, dir=ForwardScanDirection,
scan=0x5566703484f8)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1036
#7 heap_getnext (scan=scan@entry=0x5566703484f8,
direction=direction@entry=ForwardScanDirection)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/heap/heapam.c:1787
#8 0x000055666e053e21 in SeqNext (node=node@entry=0x556670328c48)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:80
#9 0x000055666e03d711 in ExecScanFetch (recheckMtd=0x55666e053de0 <SeqRecheck>,
accessMtd=0x55666e053df0 <SeqNext>, node=0x556670328c48)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execScan.c:95
#10 ExecScan (node=node@entry=0x556670328c48,
accessMtd=accessMtd@entry=0x55666e053df0 <SeqNext>,
recheckMtd=recheckMtd@entry=0x55666e053de0 <SeqRecheck>)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execScan.c:180
#11 0x000055666e053ea8 in ExecSeqScan (node=node@entry=0x556670328c48)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSeqscan.c:127
---Type <return> to continue, or q <return> to quit---
>
>
>
>
> --
> Thomas Munro
> https://enterprisedb.com
>
>
>
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-17 00:07 Thomas Munro <thomas.munro@gmail.com>
parent: Jerry Sievers <gsievers19@comcast.net>
0 siblings, 1 reply; 307+ messages in thread
From: Thomas Munro @ 2019-07-17 00:07 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
On Wed, Jul 17, 2019 at 12:05 PM Jerry Sievers <gsievers19@comcast.net> wrote:
> Program received signal SIGUSR1, User defined signal 1.
Oh, we need to ignore those pesky signals with "handle SIGUSR1 noprint nostop".
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-17 00:26 Jerry Sievers <gsievers19@comcast.net>
parent: Thomas Munro <thomas.munro@gmail.com>
0 siblings, 1 reply; 307+ messages in thread
From: Jerry Sievers @ 2019-07-17 00:26 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
Thomas Munro <thomas.munro@gmail.com> writes:
> On Wed, Jul 17, 2019 at 12:05 PM Jerry Sievers <gsievers19@comcast.net> wrote:
>
>> Program received signal SIGUSR1, User defined signal 1.
>
> Oh, we need to ignore those pesky signals with "handle SIGUSR1 noprint nostop".
Is this the right sequencing?
1. Start client and get backend pid
2. GDB; handle SIGUSR1, break, cont
3. Run query
4. bt
Thanks
Don't think I am doing this correctly. Please advise.
handle SIGUSR1 noprint nostop
Signal Stop Print Pass to program Description
SIGUSR1 No No Yes User defined signal 1
(gdb) break munmap
Breakpoint 1 at 0x7f3d09331740: file ../sysdeps/unix/syscall-template.S, line 84.
(gdb) cont
Continuing.
Breakpoint 1, munmap () at ../sysdeps/unix/syscall-template.S:84
84 ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0 munmap () at ../sysdeps/unix/syscall-template.S:84
#1 0x000055666e12d7f4 in dsm_impl_posix (impl_private=0x22, elevel=19,
mapped_size=0x556670205890, mapped_address=0x556670205888, request_size=0,
handle=<optimized out>, op=DSM_OP_DETACH)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/storage/ipc/dsm_impl.c:259
#2 dsm_impl_op (op=op@entry=DSM_OP_DETACH, handle=<optimized out>,
request_size=request_size@entry=0, impl_private=impl_private@entry=0x556670205880,
mapped_address=mapped_address@entry=0x556670205888,
mapped_size=mapped_size@entry=0x556670205890, elevel=19)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/storage/ipc/dsm_impl.c:176
#3 0x000055666e12efb1 in dsm_detach (seg=0x556670205860)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/storage/ipc/dsm.c:738
#4 0x000055666df31369 in DestroyParallelContext (pcxt=0x556670219b68)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/access/transam/parallel.c:750
#5 0x000055666e0357bb in ExecParallelCleanup (pei=0x7f3d012218b0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execParallel.c:575
#6 0x000055666e047ca2 in ExecShutdownGather (node=node@entry=0x55667033bed0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeGather.c:443
#7 0x000055666e0359f5 in ExecShutdownNode (node=0x55667033bed0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:820
#8 0x000055666e0777e1 in planstate_tree_walker (planstate=0x55667033b2b0,
walker=0x55666e0359a0 <ExecShutdownNode>, context=0x0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/nodes/nodeFuncs.c:3636
#9 0x000055666e0777e1 in planstate_tree_walker (planstate=0x55667033b040,
walker=0x55666e0359a0 <ExecShutdownNode>, context=0x0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/nodes/nodeFuncs.c:3636
#10 0x000055666e0777e1 in planstate_tree_walker (planstate=planstate@entry=0x55667033a6c8,
walker=walker@entry=0x55666e0359a0 <ExecShutdownNode>, context=context@entry=0x0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/nodes/nodeFuncs.c:3636
#11 0x000055666e0359df in ExecShutdownNode (node=node@entry=0x55667033a6c8)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:830
#12 0x000055666e04d0ff in ExecLimit (node=node@entry=0x55667033a428)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeLimit.c:139
#13 0x000055666e035d28 in ExecProcNode (node=node@entry=0x55667033a428)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:531
#14 0x000055666e051f69 in ExecNestLoop (node=node@entry=0x55667031c660)
---Type <return> to continue, or q <return> to quit--- at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeNestloop.c:174
#15 0x000055666e035e28 in ExecProcNode (node=node@entry=0x55667031c660)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:476
#16 0x000055666e054989 in ExecSort (node=node@entry=0x55667031c3f0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeSort.c:103
#17 0x000055666e035de8 in ExecProcNode (node=0x55667031c3f0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:495
#18 0x000055666e041fe9 in fetch_input_tuple (aggstate=aggstate@entry=0x55667031ba18)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeAgg.c:598
#19 0x000055666e043bb3 in agg_retrieve_direct (aggstate=0x55667031ba18)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeAgg.c:2078
#20 ExecAgg (node=node@entry=0x55667031ba18)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeAgg.c:1903
#21 0x000055666e035dc8 in ExecProcNode (node=node@entry=0x55667031ba18)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:503
#22 0x000055666e031f2e in ExecutePlan (dest=0x7f3d01277aa8, direction=<optimized out>,
numberTuples=0, sendTuples=<optimized out>, operation=CMD_SELECT,
use_parallel_mode=<optimized out>, planstate=0x55667031ba18, estate=0x55667031b878)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execMain.c:1567
#23 standard_ExecutorRun (queryDesc=0x556670320a78, direction=<optimized out>, count=0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execMain.c:339
#24 0x00007f3d01cd0515 in explain_ExecutorRun (queryDesc=0x556670320a78,
direction=ForwardScanDirection, count=0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../contrib/auto_explain/auto_explain.c:281
#25 0x00007f3d01ac8db0 in pgss_ExecutorRun (queryDesc=0x556670320a78,
direction=ForwardScanDirection, count=0)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../contrib/pg_stat_statements/pg_stat_statements.c:875
#26 0x000055666e155167 in PortalRunSelect (portal=portal@entry=0x5566701d6df8,
forward=forward@entry=1 '\001', count=0, count@entry=9223372036854775807,
dest=dest@entry=0x7f3d01277aa8)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/tcop/pquery.c:948
#27 0x000055666e1567a0 in PortalRun (portal=portal@entry=0x5566701d6df8,
count=count@entry=9223372036854775807, isTopLevel=isTopLevel@entry=1 '\001',
dest=dest@entry=0x7f3d01277aa8, altdest=altdest@entry=0x7f3d01277aa8,
completionTag=completionTag@entry=0x7ffc37bea670 "")
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/tcop/pquery.c:---Type <return> to continue, or q <return> to quit---
789
#28 0x000055666e1532d6 in exec_simple_query (
query_string=0x5566702a4c68 "select v.account_id, COUNT(cnt.clicks), te.description,\nl.product_id\nfrom nbox_nc_ah.tracking_events te\njoin nbox_nc_ah.page_views pv on pv.page_view_id = te.page_view_id\njoin nbox_nc_ah.visits v on v"...)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/tcop/postgres.c:1109
#29 PostgresMain (argc=<optimized out>, argv=argv@entry=0x556670204630,
dbname=0x5566701bab88 "staging", username=<optimized out>)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/tcop/postgres.c:4101
#30 0x000055666dec8a1b in BackendRun (port=0x5566701fd500)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/postmaster/postmaster.c:4339
#31 BackendStartup (port=0x5566701fd500)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/postmaster/postmaster.c:4013
#32 ServerLoop ()
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/postmaster/postmaster.c:1722
#33 0x000055666e0ef281 in PostmasterMain (argc=13, argv=<optimized out>)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/postmaster/postmaster.c:1330
#34 0x000055666dec9bf1 in main (argc=13, argv=0x5566701b8840)
at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/main/main.c:228
(gdb)
(gdb) quit
A debugging session is active.
Inferior 1 [process 32291] will be detached.
Quit anyway? (y or n) y
Detaching from program: /usr/lib/postgresql/9.6/bin/postgres, process 32291
root@pgdev01:/home/jsievers#
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-17 00:44 Thomas Munro <thomas.munro@gmail.com>
parent: Jerry Sievers <gsievers19@comcast.net>
0 siblings, 2 replies; 307+ messages in thread
From: Thomas Munro @ 2019-07-17 00:44 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
On Wed, Jul 17, 2019 at 12:26 PM Jerry Sievers <gsievers19@comcast.net> wrote:
> Is this the right sequencing?
>
> 1. Start client and get backend pid
> 2. GDB; handle SIGUSR1, break, cont
> 3. Run query
> 4. bt
Perfect, thanks. I think I just spotted something:
> #11 0x000055666e0359df in ExecShutdownNode (node=node@entry=0x55667033a6c8)
> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:830
> #12 0x000055666e04d0ff in ExecLimit (node=node@entry=0x55667033a428)
> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeLimit.c:139
https://github.com/postgres/postgres/blob/REL9_6_STABLE/src/backend/executor/nodeLimit.c#L139
Limit thinks it's OK to "shut down" the subtree, but if you shut down a
Gather node you can't rescan it later because it destroys its shared
memory. Oops. Not sure what to do about that yet.
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-17 00:57 Thomas Munro <thomas.munro@gmail.com>
parent: Thomas Munro <thomas.munro@gmail.com>
1 sibling, 2 replies; 307+ messages in thread
From: Thomas Munro @ 2019-07-17 00:57 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Amit Kapila <amit.kapila16@gmail.com>; Robert Haas <robertmhaas@gmail.com>
On Wed, Jul 17, 2019 at 12:44 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> > #11 0x000055666e0359df in ExecShutdownNode (node=node@entry=0x55667033a6c8)
> > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:830
> > #12 0x000055666e04d0ff in ExecLimit (node=node@entry=0x55667033a428)
> > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeLimit.c:139
>
> https://github.com/postgres/postgres/blob/REL9_6_STABLE/src/backend/executor/nodeLimit.c#L139
>
> Limit thinks it's OK to "shut down" the subtree, but if you shut down a
> Gather node you can't rescan it later because it destroys its shared
> memory. Oops. Not sure what to do about that yet.
CCing Amit and Robert, authors of commits 19df1702 and 69de1718.
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-17 00:57 Jerry Sievers <gsievers19@comcast.net>
parent: Thomas Munro <thomas.munro@gmail.com>
1 sibling, 0 replies; 307+ messages in thread
From: Jerry Sievers @ 2019-07-17 00:57 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
Thomas Munro <thomas.munro@gmail.com> writes:
> On Wed, Jul 17, 2019 at 12:26 PM Jerry Sievers <gsievers19@comcast.net> wrote:
>
>> Is this the right sequencing?
>>
>> 1. Start client and get backend pid
>> 2. GDB; handle SIGUSR1, break, cont
>> 3. Run query
>> 4. bt
>
> Perfect, thanks. I think I just spotted something:
Dig that! Great big thanks to you and Tomas, et al for jumping on this.
Please let know if there's anything else I can submit that would be
helpful.
>
>> #11 0x000055666e0359df in ExecShutdownNode (node=node@entry=0x55667033a6c8)
>> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:830
>> #12 0x000055666e04d0ff in ExecLimit (node=node@entry=0x55667033a428)
>> at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeLimit.c:139
>
> https://github.com/postgres/postgres/blob/REL9_6_STABLE/src/backend/executor/nodeLimit.c#L139
>
> Limit thinks it's OK to "shut down" the subtree, but if you shut down a
> Gather node you can't rescan it later because it destroys its shared
> memory. Oops. Not sure what to do about that yet.
>
>
> --
> Thomas Munro
> https://enterprisedb.com
>
>
>
--
Jerry Sievers
Postgres DBA/Development Consulting
e: postgres.consulting@comcast.net
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-17 03:19 Thomas Munro <thomas.munro@gmail.com>
parent: Thomas Munro <thomas.munro@gmail.com>
1 sibling, 0 replies; 307+ messages in thread
From: Thomas Munro @ 2019-07-17 03:19 UTC (permalink / raw)
To: Jerry Sievers <gsievers19@comcast.net>; +Cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Amit Kapila <amit.kapila16@gmail.com>; Robert Haas <robertmhaas@gmail.com>
On Wed, Jul 17, 2019 at 12:57 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> On Wed, Jul 17, 2019 at 12:44 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> > > #11 0x000055666e0359df in ExecShutdownNode (node=node@entry=0x55667033a6c8)
> > > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:830
> > > #12 0x000055666e04d0ff in ExecLimit (node=node@entry=0x55667033a428)
> > > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeLimit.c:139
> >
> > https://github.com/postgres/postgres/blob/REL9_6_STABLE/src/backend/executor/nodeLimit.c#L139
> >
> > Limit thinks it's OK to "shut down" the subtree, but if you shut down a
> > Gather node you can't rescan it later because it destroys its shared
> > memory. Oops. Not sure what to do about that yet.
>
> CCing Amit and Robert, authors of commits 19df1702 and 69de1718.
Here's a repro (I'm sure you can find a shorter one, this one's hacked
up from join_hash.sql, basically just adding LIMIT):
create table join_foo as select generate_series(1, 3000) as id,
'xxxxx'::text as t;
alter table join_foo set (parallel_workers = 0);
create table join_bar as select generate_series(0, 10000) as id,
'xxxxx'::text as t;
alter table join_bar set (parallel_workers = 2);
set parallel_setup_cost = 0;
set parallel_tuple_cost = 0;
set max_parallel_workers_per_gather = 2;
set enable_material = off;
set enable_mergejoin = off;
set work_mem = '1GB';
select count(*) from join_foo
left join (select b1.id, b1.t from join_bar b1 join join_bar b2
using (id) limit 1000) ss
on join_foo.id < ss.id + 1 and join_foo.id > ss.id - 1;
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-17 10:40 Amit Kapila <amit.kapila16@gmail.com>
parent: Thomas Munro <thomas.munro@gmail.com>
1 sibling, 1 reply; 307+ messages in thread
From: Amit Kapila @ 2019-07-17 10:40 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
On Wed, Jul 17, 2019 at 6:28 AM Thomas Munro <thomas.munro@gmail.com> wrote:
>
> On Wed, Jul 17, 2019 at 12:44 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> > > #11 0x000055666e0359df in ExecShutdownNode (node=node@entry=0x55667033a6c8)
> > > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:830
> > > #12 0x000055666e04d0ff in ExecLimit (node=node@entry=0x55667033a428)
> > > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeLimit.c:139
> >
> > https://github.com/postgres/postgres/blob/REL9_6_STABLE/src/backend/executor/nodeLimit.c#L139
> >
> > Limit thinks it's OK to "shut down" the subtree, but if you shut down a
> > Gather node you can't rescan it later because it destroys its shared
> > memory. Oops. Not sure what to do about that yet.
>
Yeah, that is a problem. Actually, what we need here is to
wait-for-workers-to-finish and collect all the instrumentation
information. We don't need to destroy the shared memory at this
stage, but we don't have a special purpose function which can just
allow us to collect stats. One idea could be that we create a special
purpose function which sounds like a recipe of code duplication,
another could be that somehow pass the information through
ExecShutdownNode to Gather/GatherMerge that they don't destroy shared
memory. Immediately, I can't think of better ideas, but it is
possible that there is some better way to deal with this.
> CCing Amit and Robert, authors of commits 19df1702 and 69de1718.
>
Thanks for diagnosing the issue.
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-18 06:40 Amit Kapila <amit.kapila16@gmail.com>
parent: Amit Kapila <amit.kapila16@gmail.com>
0 siblings, 1 reply; 307+ messages in thread
From: Amit Kapila @ 2019-07-18 06:40 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
On Wed, Jul 17, 2019 at 4:10 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
> On Wed, Jul 17, 2019 at 6:28 AM Thomas Munro <thomas.munro@gmail.com> wrote:
> >
> > On Wed, Jul 17, 2019 at 12:44 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> > > > #11 0x000055666e0359df in ExecShutdownNode (node=node@entry=0x55667033a6c8)
> > > > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/execProcnode.c:830
> > > > #12 0x000055666e04d0ff in ExecLimit (node=node@entry=0x55667033a428)
> > > > at /build/postgresql-9.6-5O8OLM/postgresql-9.6-9.6.14/build/../src/backend/executor/nodeLimit.c:139
> > >
> > > https://github.com/postgres/postgres/blob/REL9_6_STABLE/src/backend/executor/nodeLimit.c#L139
> > >
> > > Limit thinks it's OK to "shut down" the subtree, but if you shut down a
> > > Gather node you can't rescan it later because it destroys its shared
> > > memory. Oops. Not sure what to do about that yet.
> >
>
> Yeah, that is a problem. Actually, what we need here is to
> wait-for-workers-to-finish and collect all the instrumentation
> information. We don't need to destroy the shared memory at this
> stage, but we don't have a special purpose function which can just
> allow us to collect stats. One idea could be that we create a special
> purpose function which sounds like a recipe of code duplication,
> another could be that somehow pass the information through
> ExecShutdownNode to Gather/GatherMerge that they don't destroy shared
> memory. Immediately, I can't think of better ideas, but it is
> possible that there is some better way to deal with this.
>
I am not able to come up with anything better. Robert, Thomas, do you
see any problem with this idea or do you have any better ideas to fix
this issue?
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-18 09:40 Thomas Munro <thomas.munro@gmail.com>
parent: Amit Kapila <amit.kapila16@gmail.com>
0 siblings, 1 reply; 307+ messages in thread
From: Thomas Munro @ 2019-07-18 09:40 UTC (permalink / raw)
To: Amit Kapila <amit.kapila16@gmail.com>; +Cc: Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
On Thu, Jul 18, 2019 at 6:40 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> On Wed, Jul 17, 2019 at 4:10 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> > Yeah, that is a problem. Actually, what we need here is to
> > wait-for-workers-to-finish and collect all the instrumentation
> > information. We don't need to destroy the shared memory at this
> > stage, but we don't have a special purpose function which can just
> > allow us to collect stats. One idea could be that we create a special
> > purpose function which sounds like a recipe of code duplication,
> > another could be that somehow pass the information through
> > ExecShutdownNode to Gather/GatherMerge that they don't destroy shared
> > memory. Immediately, I can't think of better ideas, but it is
> > possible that there is some better way to deal with this.
>
> I am not able to come up with anything better. Robert, Thomas, do you
> see any problem with this idea or do you have any better ideas to fix
> this issue?
Hmm, so something like a new argument "bool final" added to the
ExecXXXShutdown() functions, which receives false in this case to tell
it that there could be a rescan so keep the parallel context around.
Or alternatively a separate function with another end-of-scan type of
name that I'm having trouble inventing, which is basically the same
but a bigger patch. If you add a new argument you might in theory
want to pass that on to the ShutdownForeignScan and ShutdownCustomScan
callbacks, but we obviously can't change those APIs in the back
branches. If you add a new function instead you might theoretically
want to add it to those APIs too, which you also can't really do in
the back branches either (well even if you could, existing extensions
won't register anything). I think the new argument version is
probably better because I suspect only Gather would really ever have
any reason to treat the two cases differently, and all existing cases
in or out of core would just keep doing what they're doing. So I
think adding "bool final" (or better name) would probably work out OK,
and I don't have a better idea.
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-18 13:45 Tom Lane <tgl@sss.pgh.pa.us>
parent: Thomas Munro <thomas.munro@gmail.com>
0 siblings, 2 replies; 307+ messages in thread
From: Tom Lane @ 2019-07-18 13:45 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Amit Kapila <amit.kapila16@gmail.com>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
Thomas Munro <thomas.munro@gmail.com> writes:
> Hmm, so something like a new argument "bool final" added to the
> ExecXXXShutdown() functions, which receives false in this case to tell
> it that there could be a rescan so keep the parallel context around.
I think this is going in the wrong direction. Nodes should *always*
assume that a rescan is possible until ExecEndNode is called. See the
commentary about EXEC_FLAG_REWIND in executor.h:
* REWIND indicates that the plan node should try to efficiently support
* rescans without parameter changes. (Nodes must support ExecReScan calls
* in any case, but if this flag was not given, they are at liberty to do it
* through complete recalculation. Note that a parameter change forces a
* full recalculation in any case.)
If nodeLimit is doing something that's incompatible with that, it's
nodeLimit's fault; and similarly for the parallel machinery.
If you want to do otherwise, you are going to be inventing a whole
bunch of complicated and doubtless-initially-buggy control logic
to pass down information about whether a rescan might be possible.
That doesn't sound like a recipe for a back-patchable fix. Perhaps
we could consider redesigning the rules around REWIND in a future
version, but that's not where to focus the bug fix effort.
regards, tom lane
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-19 03:00 Amit Kapila <amit.kapila16@gmail.com>
parent: Tom Lane <tgl@sss.pgh.pa.us>
1 sibling, 1 reply; 307+ messages in thread
From: Amit Kapila @ 2019-07-19 03:00 UTC (permalink / raw)
To: Tom Lane <tgl@sss.pgh.pa.us>; +Cc: Thomas Munro <thomas.munro@gmail.com>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
On Thu, Jul 18, 2019 at 7:15 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> Thomas Munro <thomas.munro@gmail.com> writes:
> > Hmm, so something like a new argument "bool final" added to the
> > ExecXXXShutdown() functions, which receives false in this case to tell
> > it that there could be a rescan so keep the parallel context around.
>
> I think this is going in the wrong direction. Nodes should *always*
> assume that a rescan is possible until ExecEndNode is called.
>
I am thinking that why not we remove the part of destroying the
parallel context (and shared memory) from ExecShutdownGather (and
ExecShutdownGatherMerge) and then do it at the time of ExecEndGather
(and ExecEndGatherMerge)? This should fix the bug in hand and seems
to be more consistent with our overall design principles. I have not
tried to code it to see if there are any other repercussions of the
same but seems worth investigating. What do you think?
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-23 03:40 Thomas Munro <thomas.munro@gmail.com>
parent: Amit Kapila <amit.kapila16@gmail.com>
0 siblings, 1 reply; 307+ messages in thread
From: Thomas Munro @ 2019-07-23 03:40 UTC (permalink / raw)
To: Amit Kapila <amit.kapila16@gmail.com>; +Cc: Tom Lane <tgl@sss.pgh.pa.us>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
On Fri, Jul 19, 2019 at 3:00 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> On Thu, Jul 18, 2019 at 7:15 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > Thomas Munro <thomas.munro@gmail.com> writes:
> > > Hmm, so something like a new argument "bool final" added to the
> > > ExecXXXShutdown() functions, which receives false in this case to tell
> > > it that there could be a rescan so keep the parallel context around.
> >
> > I think this is going in the wrong direction. Nodes should *always*
> > assume that a rescan is possible until ExecEndNode is called.
>
> I am thinking that why not we remove the part of destroying the
> parallel context (and shared memory) from ExecShutdownGather (and
> ExecShutdownGatherMerge) and then do it at the time of ExecEndGather
> (and ExecEndGatherMerge)? This should fix the bug in hand and seems
> to be more consistent with our overall design principles. I have not
> tried to code it to see if there are any other repercussions of the
> same but seems worth investigating. What do you think?
I tried moving ExecParallelCleanup() into ExecEndGather(). The first
problem is that ExecutePlan() wraps execution in
EnterParallelMode()/ExitParallelMode(), but ExitParallelMode() fails
an assertion that no parallel context is active because
ExecEndGather() hasn't run yet. The enclosing
ExecutorStart()/ExecutorEnd() calls are further down the call stack,
in ProcessQuery(). So some more restructuring might be needed to exit
parallel mode later, but then I feel like you might be getting way out
of back-patchable territory, especially if it involves moving code to
the other side of the executor hook boundary. Is there an easier way?
Another idea from the band-aid-solutions-that-are-easy-to-back-patch
department: in ExecutePlan() where we call ExecShutdownNode(), we
could write EXEC_FLAG_DONE into estate->es_top_eflags, and then have
ExecGatherShutdown() only run ExecParallelCleanup() if it sees that
flag. That's not beautiful, but it's less churn that the 'bool final'
argument we discussed before, and could be removed in master when we
have a better way.
Stepping back a bit, it seems like we need two separate tree-walking
calls: one to free resources not needed anymore by the current rescan
(workers), and another to free resources not needed ever again
(parallel context). That could be spelled ExecShutdownNode(false) and
ExecShutdownNode(true), or controlled with the EXEC_FLAG_DONE kluge,
or a new additional ExecSomethingSomethingNode() function, or as you
say, perhaps the second thing could be incorporated into
ExecEndNode(). I suspect that the Shutdown callbacks for Hash, Hash
Join, Custom Scan and Foreign Scan might not be needed anymore if we
could keep the parallel context around until after the run
ExecEndNode().
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-23 11:58 Amit Kapila <amit.kapila16@gmail.com>
parent: Thomas Munro <thomas.munro@gmail.com>
0 siblings, 1 reply; 307+ messages in thread
From: Amit Kapila @ 2019-07-23 11:58 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Tom Lane <tgl@sss.pgh.pa.us>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
On Tue, Jul 23, 2019 at 9:11 AM Thomas Munro <thomas.munro@gmail.com> wrote:
>
> On Fri, Jul 19, 2019 at 3:00 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> > I am thinking that why not we remove the part of destroying the
> > parallel context (and shared memory) from ExecShutdownGather (and
> > ExecShutdownGatherMerge) and then do it at the time of ExecEndGather
> > (and ExecEndGatherMerge)? This should fix the bug in hand and seems
> > to be more consistent with our overall design principles. I have not
> > tried to code it to see if there are any other repercussions of the
> > same but seems worth investigating. What do you think?
>
> I tried moving ExecParallelCleanup() into ExecEndGather(). The first
> problem is that ExecutePlan() wraps execution in
> EnterParallelMode()/ExitParallelMode(), but ExitParallelMode() fails
> an assertion that no parallel context is active because
> ExecEndGather() hasn't run yet. The enclosing
> ExecutorStart()/ExecutorEnd() calls are further down the call stack,
> in ProcessQuery(). So some more restructuring might be needed to exit
> parallel mode later, but then I feel like you might be getting way out
> of back-patchable territory, especially if it involves moving code to
> the other side of the executor hook boundary. Is there an easier way?
>
If we have to follow the solution on these lines, then I don't see an
easier way. One idea could be that we relax the assert in
ExitParallelMode so that it doesn't expect parallel context to be gone
by that time, but not sure if that is a good idea because it is used
in some other places as well. I feel in general it is a good
assertion that before we leave parallel mode, the parallel context
should be gone as that ensures we won't do any parallel activity after
that.
> Another idea from the band-aid-solutions-that-are-easy-to-back-patch
> department: in ExecutePlan() where we call ExecShutdownNode(), we
> could write EXEC_FLAG_DONE into estate->es_top_eflags, and then have
> ExecGatherShutdown() only run ExecParallelCleanup() if it sees that
> flag. That's not beautiful, but it's less churn that the 'bool final'
> argument we discussed before, and could be removed in master when we
> have a better way.
>
Right, that will be lesser code churn and it can also work. However,
one thing that needs some thought is till now es_top_eflags is only
set in ExecutorStart and same is mentioned in comments where it is
declared and it seems we are going to change that with this idea. How
about having a separate function ExecBlahShutdown which will clean up
resources as parallel context and can be called only from ExecutePlan
where we are calling ExecShutdownNode? I think both these and the
other solution we have discussed are on similar lines and another idea
could be to relax the assert which again is not a superb idea.
> Stepping back a bit, it seems like we need two separate tree-walking
> calls: one to free resources not needed anymore by the current rescan
> (workers), and another to free resources not needed ever again
> (parallel context). That could be spelled ExecShutdownNode(false) and
> ExecShutdownNode(true), or controlled with the EXEC_FLAG_DONE kluge,
> or a new additional ExecSomethingSomethingNode() function, or as you
> say, perhaps the second thing could be incorporated into
> ExecEndNode(). I suspect that the Shutdown callbacks for Hash, Hash
> Join, Custom Scan and Foreign Scan might not be needed anymore if we
> could keep the parallel context around until after the run
> ExecEndNode().
>
I think we need those to collect instrumentation information. I guess
that has to be done before we call InstrStopNode, otherwise, we might
miss some instrumentation information.
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-26 04:13 Amit Kapila <amit.kapila16@gmail.com>
parent: Amit Kapila <amit.kapila16@gmail.com>
0 siblings, 1 reply; 307+ messages in thread
From: Amit Kapila @ 2019-07-26 04:13 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Tom Lane <tgl@sss.pgh.pa.us>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
On Tue, Jul 23, 2019 at 5:28 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
> On Tue, Jul 23, 2019 at 9:11 AM Thomas Munro <thomas.munro@gmail.com> wrote:
> >
>
> > Another idea from the band-aid-solutions-that-are-easy-to-back-patch
> > department: in ExecutePlan() where we call ExecShutdownNode(), we
> > could write EXEC_FLAG_DONE into estate->es_top_eflags, and then have
> > ExecGatherShutdown() only run ExecParallelCleanup() if it sees that
> > flag. That's not beautiful, but it's less churn that the 'bool final'
> > argument we discussed before, and could be removed in master when we
> > have a better way.
> >
>
> Right, that will be lesser code churn and it can also work. However,
> one thing that needs some thought is till now es_top_eflags is only
> set in ExecutorStart and same is mentioned in comments where it is
> declared and it seems we are going to change that with this idea. How
> about having a separate function ExecBlahShutdown which will clean up
> resources as parallel context and can be called only from ExecutePlan
> where we are calling ExecShutdownNode? I think both these and the
> other solution we have discussed are on similar lines and another idea
> could be to relax the assert which again is not a superb idea.
>
It seems we don't have a clear preference for any particular solution
among these and neither there appears to be any better idea. I guess
we can wait for a few days to see if Robert has any views on this,
otherwise, pick one of the above and move ahead.
Robert, let us know if you have any preference or better idea to fix
this problem?
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-27 02:59 Thomas Munro <thomas.munro@gmail.com>
parent: Amit Kapila <amit.kapila16@gmail.com>
0 siblings, 1 reply; 307+ messages in thread
From: Thomas Munro @ 2019-07-27 02:59 UTC (permalink / raw)
To: Amit Kapila <amit.kapila16@gmail.com>; +Cc: Tom Lane <tgl@sss.pgh.pa.us>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
On Fri, Jul 26, 2019 at 4:13 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> On Tue, Jul 23, 2019 at 5:28 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> > Right, that will be lesser code churn and it can also work. However,
> > one thing that needs some thought is till now es_top_eflags is only
> > set in ExecutorStart and same is mentioned in comments where it is
> > declared and it seems we are going to change that with this idea. How
> > about having a separate function ExecBlahShutdown which will clean up
> > resources as parallel context and can be called only from ExecutePlan
> > where we are calling ExecShutdownNode? I think both these and the
> > other solution we have discussed are on similar lines and another idea
> > could be to relax the assert which again is not a superb idea.
>
> It seems we don't have a clear preference for any particular solution
> among these and neither there appears to be any better idea. I guess
> we can wait for a few days to see if Robert has any views on this,
> otherwise, pick one of the above and move ahead.
I take the EXEC_FLAG_DONE idea back. It's ugly and too hard to verify
that every appropriate path sets it, and a flag that means the
opposite would be even more of a kluge, and generally I think I was
looking at this too myopically: I was looking for a way to shut down
processes ASAP without giving up the shared memory we'll need for
rescanning, but what I should have been looking at is the reason you
did that in the first place: to get the instrumentation data. Can you
explain why it's necessary to do that explicitly for Limit? Wouldn't
the right place to collect instrumentation be at the end of execution
when Shutdown will run in all cases anyway (and possibly also during
ExecParallelReinitialize() or something like that if it's being
clobbered by rescans, I didn't check)? What's special about Limit?
Today while poking at this and trying to answer those questions for
myself, I realised that the repro I posted earlier[1] crashes exactly
as Jerry reported on REL9_6_STABLE, but in later release branches it
runs to completion. That's because the crashing code was removed in
commit 41b0dd98 "Separate reinitialization of shared parallel-scan
state from ExecReScan.".
So newer branches get past that problem, but they all spit out tons of
each of these three warnings:
WARNING: buffer refcount leak: [172] (rel=base/12558/16390,
blockNum=5, flags=0x93800000, refcount=1 2998)
...
WARNING: relcache reference leak: relation "join_bar" not closed
...
WARNING: Snapshot reference leak: Snapshot 0x7ff20383bfb0 still referenced
...
Oops. I don't know exactly why yet, but the problem goes away if you
just comment out the offending ExecShutdownNode() call in nodeLimit.c.
I tried to understand whether the buffer stats were wrong with that
code commented out (Adrien Nayrat's original complaint[2]), but I ran
out of time for debugging adventures today.
[1] https://www.postgresql.org/message-id/CA%2BhUKGJyqDp9FZSHLTjiNMcz-c6%3DRdStB%2BUjVZsR8wfHnJXy8Q%40ma...
[2] https://www.postgresql.org/message-id/flat/86137f17-1dfb-42f9-7421-82fd786b04a1%40anayrat.info
--
Thomas Munro
https://enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-27 05:58 Amit Kapila <amit.kapila16@gmail.com>
parent: Thomas Munro <thomas.munro@gmail.com>
0 siblings, 0 replies; 307+ messages in thread
From: Amit Kapila @ 2019-07-27 05:58 UTC (permalink / raw)
To: Thomas Munro <thomas.munro@gmail.com>; +Cc: Tom Lane <tgl@sss.pgh.pa.us>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers; Robert Haas <robertmhaas@gmail.com>
On Sat, Jul 27, 2019 at 8:29 AM Thomas Munro <thomas.munro@gmail.com> wrote:
>
> On Fri, Jul 26, 2019 at 4:13 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> > On Tue, Jul 23, 2019 at 5:28 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
> > > Right, that will be lesser code churn and it can also work. However,
> > > one thing that needs some thought is till now es_top_eflags is only
> > > set in ExecutorStart and same is mentioned in comments where it is
> > > declared and it seems we are going to change that with this idea. How
> > > about having a separate function ExecBlahShutdown which will clean up
> > > resources as parallel context and can be called only from ExecutePlan
> > > where we are calling ExecShutdownNode? I think both these and the
> > > other solution we have discussed are on similar lines and another idea
> > > could be to relax the assert which again is not a superb idea.
> >
> > It seems we don't have a clear preference for any particular solution
> > among these and neither there appears to be any better idea. I guess
> > we can wait for a few days to see if Robert has any views on this,
> > otherwise, pick one of the above and move ahead.
>
> I take the EXEC_FLAG_DONE idea back. It's ugly and too hard to verify
> that every appropriate path sets it, and a flag that means the
> opposite would be even more of a kluge, and generally I think I was
> looking at this too myopically: I was looking for a way to shut down
> processes ASAP without giving up the shared memory we'll need for
> rescanning, but what I should have been looking at is the reason you
> did that in the first place: to get the instrumentation data. Can you
> explain why it's necessary to do that explicitly for Limit? Wouldn't
> the right place to collect instrumentation be at the end of execution
> when Shutdown will run in all cases anyway (and possibly also during
> ExecParallelReinitialize() or something like that if it's being
> clobbered by rescans, I didn't check)? What's special about Limit?
>
I think here you are missing the point that to collect the
instrumentation information one also need to use InstrStartNode and
InstrStopNode. So, for the Limit node, the InstrStopNode would be
already done by the time we call shutdown of workers at the end of
execution. To know a bit more details, see [1][2][3].
> Today while poking at this and trying to answer those questions for
> myself, I realised that the repro I posted earlier[1] crashes exactly
> as Jerry reported on REL9_6_STABLE, but in later release branches it
> runs to completion. That's because the crashing code was removed in
> commit 41b0dd98 "Separate reinitialization of shared parallel-scan
> state from ExecReScan.".
>
> So newer branches get past that problem, but they all spit out tons of
> each of these three warnings:
>
> WARNING: buffer refcount leak: [172] (rel=base/12558/16390,
> blockNum=5, flags=0x93800000, refcount=1 2998)
> ...
> WARNING: relcache reference leak: relation "join_bar" not closed
> ...
> WARNING: Snapshot reference leak: Snapshot 0x7ff20383bfb0 still referenced
> ...
>
> Oops.
>
This is exactly due to the same problem that before rescans, we have
destroyed the shared memory. If you do the earlier trick of not
cleaning up shared memory till ExecEndNode, then you won't see this
problem.
[1] - https://www.postgresql.org/message-id/CAA4eK1KZEbYKj9HHP-6WqqjAXuoB%2BWJu-w1s9uovj%3DeeBxC48Q%40mail...
[2] - https://www.postgresql.org/message-id/CA%2BTgmoY3kcTcc5bFCZeY5NMFna-xaMPuTHA-z-z2Bmfg%2Bdb-XQ%40mail...
[3] - https://www.postgresql.org/message-id/CAA4eK1L0KAZWgnRJz%3DVNVpyS3FFbVh8E5egyziaR0E10bC204Q%40mail.g...
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-30 18:35 Robert Haas <robertmhaas@gmail.com>
parent: Tom Lane <tgl@sss.pgh.pa.us>
1 sibling, 1 reply; 307+ messages in thread
From: Robert Haas @ 2019-07-30 18:35 UTC (permalink / raw)
To: Tom Lane <tgl@sss.pgh.pa.us>; +Cc: Thomas Munro <thomas.munro@gmail.com>; Amit Kapila <amit.kapila16@gmail.com>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
On Thu, Jul 18, 2019 at 9:45 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> I think this is going in the wrong direction. Nodes should *always*
> assume that a rescan is possible until ExecEndNode is called.
> If you want to do otherwise, you are going to be inventing a whole
> bunch of complicated and doubtless-initially-buggy control logic
> to pass down information about whether a rescan might be possible.
> That doesn't sound like a recipe for a back-patchable fix. Perhaps
> we could consider redesigning the rules around REWIND in a future
> version, but that's not where to focus the bug fix effort.
So, if I can summarize how we got here, as best I understand it:
0. The historic behavior of the executor is to assume it's OK to leak
resources for the lifetime of the query. Nodes that are executed to
completion generally do some cleanup, but we feel free (as under
Limit) to just stop executing a node without giving it any hint that
it should release resources. So a Sort may hold onto a terabyte of
memory and an index scan may keep holding a pin even after there's no
theoretical way of ever needing those resources again, and we just
don't care.
1. Parallel query made that perhaps-already-shaky assumption a lot
more problematic. Partly that's because workers are a a more scarce
and considerably heavier resource than anything else, and moreover act
as a container for anything else, so whatever you were leaking before,
you can now leak N times more of it, plus N processes, until the end
of the query. However, there's a correctness reason too, which is that
when a node has a copy in the leader and a copy in every worker, each
copy has its own instrumentation data (startup time, run time, nloops,
etc) and we can only fold all that together once the node is done
executing, because it's really hard to add up a bunch of numbers
before the numbers are done changing. We could've made the
instrumentation shared throughout, but if we had, we could have
contention for updating the instrumentation data, which seems like
it'd be bad.
2. To fix that correctness problem, we decided to try to shut down the
node under a limit node when we're done with it (commit
85c9d3475e4f680dbca7c04fe096af018f3b8760). At a certain level, this
looks fundamentally necessary to me. If you're going to have N
separate copies of the instrumentation, and you want to add them up
when you're done, then you have to decide to be done at some point;
otherwise you don't know when to add them up, and maybe won't add them
up at all, and then you'll be sad. This does not mean that the exact
timing couldn't be changed somehow, but if you want a correct
implementation, you have to shut down Limit's sub-node after you're
done executing it (so that you can get the instrumentation data from
the workers after it's final) and before you start destroying DSM
segments and stuff (so that you get the instrumentation data from the
workers before it vanishes).
3. The aforementioned commit turned out to be buggy in at least to two
ways, precisely because it didn't do a good enough job predicting when
the Limit needed to be shut down. First, there was commit
2cd0acfdade82f3cab362fd9129d453f81cc2745, where we missed the fact
that you could hit the Limit and then back up. Second, there's the
present issue, where the Limit gets rescanned.
So, given all that, if we want to adopt Tom's position that we should
always cater to a possible rescan, then we're going to have to rethink
the way that instrumentation data gets consolidated from workers into
the leader in such a way that we can consolidate multiple times
without ending up with the wrong answer. The other option is to do
what I understand Amit and Thomas to be proposing, which is to do a
better job identifying the case where we're "done for good" and can
trigger the shutdown fearlessly.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-31 04:07 Amit Kapila <amit.kapila16@gmail.com>
parent: Robert Haas <robertmhaas@gmail.com>
0 siblings, 1 reply; 307+ messages in thread
From: Amit Kapila @ 2019-07-31 04:07 UTC (permalink / raw)
To: Robert Haas <robertmhaas@gmail.com>; +Cc: Tom Lane <tgl@sss.pgh.pa.us>; Thomas Munro <thomas.munro@gmail.com>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
On Wed, Jul 31, 2019 at 12:05 AM Robert Haas <robertmhaas@gmail.com> wrote:
>
> On Thu, Jul 18, 2019 at 9:45 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > I think this is going in the wrong direction. Nodes should *always*
> > assume that a rescan is possible until ExecEndNode is called.
> > If you want to do otherwise, you are going to be inventing a whole
> > bunch of complicated and doubtless-initially-buggy control logic
> > to pass down information about whether a rescan might be possible.
> > That doesn't sound like a recipe for a back-patchable fix. Perhaps
> > we could consider redesigning the rules around REWIND in a future
> > version, but that's not where to focus the bug fix effort.
>
> So, if I can summarize how we got here, as best I understand it:
>
Thanks for the summarization. This looks mostly correct to me.
> 0. The historic behavior of the executor is to assume it's OK to leak
> resources for the lifetime of the query. Nodes that are executed to
> completion generally do some cleanup, but we feel free (as under
> Limit) to just stop executing a node without giving it any hint that
> it should release resources. So a Sort may hold onto a terabyte of
> memory and an index scan may keep holding a pin even after there's no
> theoretical way of ever needing those resources again, and we just
> don't care.
>
> 1. Parallel query made that perhaps-already-shaky assumption a lot
> more problematic. Partly that's because workers are a a more scarce
> and considerably heavier resource than anything else, and moreover act
> as a container for anything else, so whatever you were leaking before,
> you can now leak N times more of it, plus N processes, until the end
> of the query. However, there's a correctness reason too, which is that
> when a node has a copy in the leader and a copy in every worker, each
> copy has its own instrumentation data (startup time, run time, nloops,
> etc) and we can only fold all that together once the node is done
> executing, because it's really hard to add up a bunch of numbers
> before the numbers are done changing. We could've made the
> instrumentation shared throughout, but if we had, we could have
> contention for updating the instrumentation data, which seems like
> it'd be bad.
>
> 2. To fix that correctness problem, we decided to try to shut down the
> node under a limit node when we're done with it (commit
> 85c9d3475e4f680dbca7c04fe096af018f3b8760). At a certain level, this
> looks fundamentally necessary to me. If you're going to have N
> separate copies of the instrumentation, and you want to add them up
> when you're done, then you have to decide to be done at some point;
> otherwise you don't know when to add them up, and maybe won't add them
> up at all, and then you'll be sad. This does not mean that the exact
> timing couldn't be changed somehow, but if you want a correct
> implementation, you have to shut down Limit's sub-node after you're
> done executing it (so that you can get the instrumentation data from
> the workers after it's final) and before you start destroying DSM
> segments and stuff (so that you get the instrumentation data from the
> workers before it vanishes).
>
> 3. The aforementioned commit turned out to be buggy in at least to two
> ways, precisely because it didn't do a good enough job predicting when
> the Limit needed to be shut down. First, there was commit
> 2cd0acfdade82f3cab362fd9129d453f81cc2745, where we missed the fact
> that you could hit the Limit and then back up.
>
We have not missed it, rather we decided to it separately because it
appears to impact some different cases as well [1][2].
> Second, there's the
> present issue, where the Limit gets rescanned.
>
> So, given all that, if we want to adopt Tom's position that we should
> always cater to a possible rescan, then we're going to have to rethink
> the way that instrumentation data gets consolidated from workers into
> the leader in such a way that we can consolidate multiple times
> without ending up with the wrong answer.
>
The other idea we had discussed which comes closer to adopting Tom's
position was that during ExecShutdownNode, we just destroy parallel
workers, collect instrumentation data and don't destroy the parallel
context. The parallel context could be destroyed in ExecEndNode
(ExecEndGather(Merge)) code path. The problem with this idea is that
ExitParallelMode doesn't expect parallel context to be active. Now,
we can either change the location of Exit/EnterParallelMode or relax
that restriction. As mentioned above that restriction appears good to
me, so I am not in favor of changing it unless we have some other
solid way to install it. I am not sure if this idea is better than
other approaches we are discussing.
> The other option is to do
> what I understand Amit and Thomas to be proposing, which is to do a
> better job identifying the case where we're "done for good" and can
> trigger the shutdown fearlessly.
>
Yes, this sounds safe fix for back-branches. We might want to go with
this for back-branches and then see if we can come up with a better
way to fix for HEAD.
[1] - https://www.postgresql.org/message-id/CA%2BTgmoYAxqmE13UOOSU%3DmE-hBGnTfYakb3dOoOJ_043Oc%3D6Xug%40ma...
[2] - https://www.postgresql.org/message-id/CAA4eK1KwCx9qQk%3DKo4LFTwoYg9B8TSccPAc%3DEoJR88rQpCYVdA%40mail...
--
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
^ permalink raw reply [nested|flat] 307+ messages in thread
* Re: SegFault on 9.6.14
@ 2019-07-31 04:30 Tom Lane <tgl@sss.pgh.pa.us>
parent: Amit Kapila <amit.kapila16@gmail.com>
0 siblings, 0 replies; 307+ messages in thread
From: Tom Lane @ 2019-07-31 04:30 UTC (permalink / raw)
To: Amit Kapila <amit.kapila16@gmail.com>; +Cc: Robert Haas <robertmhaas@gmail.com>; Thomas Munro <thomas.munro@gmail.com>; Jerry Sievers <gsievers19@comcast.net>; Tomas Vondra <tomas.vondra@2ndquadrant.com>; pgsql-hackers
Amit Kapila <amit.kapila16@gmail.com> writes:
> On Wed, Jul 31, 2019 at 12:05 AM Robert Haas <robertmhaas@gmail.com> wrote:
>> The other option is to do
>> what I understand Amit and Thomas to be proposing, which is to do a
>> better job identifying the case where we're "done for good" and can
>> trigger the shutdown fearlessly.
> Yes, this sounds safe fix for back-branches.
Actually, my point was exactly that I *didn't* think that would be a
safe fix for the back branches --- at least, not unless you're okay
with a very conservative and hence resource-leaky method for deciding
when it's safe to shut down sub-nodes.
We could do something involving (probably) adding new eflags bits to
pass this sort of info down to child plan nodes. But that's going
to require design and coding, and it will not be backwards compatible.
At least not from the point of view of any extension that's doing
anything in that area.
regards, tom lane
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
* [PATCH] Track skipped tables during autovacuum and autoanalyze
@ 2026-03-24 04:09 Yugo Nagata <nagata@sraoss.co.jp>
0 siblings, 0 replies; 307+ messages in thread
From: Yugo Nagata @ 2026-03-24 04:09 UTC (permalink / raw)
---
src/backend/catalog/system_views.sql | 4 ++
src/backend/commands/vacuum.c | 10 +++
src/backend/utils/activity/pgstat_relation.c | 66 ++++++++++++++++++++
src/backend/utils/adt/pgstatfuncs.c | 12 ++++
src/include/catalog/pg_proc.dat | 16 +++++
src/include/pgstat.h | 8 +++
src/test/regress/expected/rules.out | 12 ++++
7 files changed, 128 insertions(+)
diff --git a/src/backend/catalog/system_views.sql b/src/backend/catalog/system_views.sql
index f1ed7b58f13..914ba762b68 100644
--- a/src/backend/catalog/system_views.sql
+++ b/src/backend/catalog/system_views.sql
@@ -737,12 +737,16 @@ CREATE VIEW pg_stat_all_tables AS
pg_stat_get_ins_since_vacuum(C.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(C.oid) as last_vacuum,
pg_stat_get_last_autovacuum_time(C.oid) as last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(C.oid) as last_skipped_autovacuum,
pg_stat_get_last_analyze_time(C.oid) as last_analyze,
pg_stat_get_last_autoanalyze_time(C.oid) as last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(C.oid) as last_skipped_autoanalyze,
pg_stat_get_vacuum_count(C.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(C.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(C.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(C.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(C.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(C.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(C.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(C.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(C.oid) AS total_analyze_time,
diff --git a/src/backend/commands/vacuum.c b/src/backend/commands/vacuum.c
index bce3a2daa24..5a0b5db39ad 100644
--- a/src/backend/commands/vacuum.c
+++ b/src/backend/commands/vacuum.c
@@ -829,10 +829,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_VACUUM) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping vacuum of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_vacuum(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
@@ -850,10 +855,15 @@ vacuum_open_relation(Oid relid, RangeVar *relation, bits32 options,
if ((options & VACOPT_ANALYZE) != 0)
{
if (!rel_lock)
+ {
ereport(elevel,
(errcode(ERRCODE_LOCK_NOT_AVAILABLE),
errmsg("skipping analyze of \"%s\" --- lock not available",
relation->relname)));
+
+ if (AmAutoVacuumWorkerProcess())
+ pgstat_report_skipped_analyze(relid);
+ }
else
ereport(elevel,
(errcode(ERRCODE_UNDEFINED_TABLE),
diff --git a/src/backend/utils/activity/pgstat_relation.c b/src/backend/utils/activity/pgstat_relation.c
index bc8c43b96aa..1329f7d9bf1 100644
--- a/src/backend/utils/activity/pgstat_relation.c
+++ b/src/backend/utils/activity/pgstat_relation.c
@@ -271,6 +271,72 @@ pgstat_report_vacuum(Relation rel, PgStat_Counter livetuples,
(void) pgstat_flush_backend(false, PGSTAT_BACKEND_FLUSH_IO);
}
+/*
+ * Report that the table was skipped during autovacuum.
+ */
+void
+pgstat_report_skipped_vacuum(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autovacuum_time = ts;
+ tabentry->skipped_autovacuum_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
+/*
+ * Report that the table was skipped during autoanalyze.
+ */
+void
+pgstat_report_skipped_analyze(Oid relid)
+{
+ PgStat_EntryRef *entry_ref;
+ PgStatShared_Relation *shtabentry;
+ PgStat_StatTabEntry *tabentry;
+ TimestampTz ts;
+
+ Assert(AmAutoVacuumWorkerProcess());
+
+ if (!pgstat_track_counts)
+ return;
+
+ /* Store the data in the table's hash table entry. */
+ ts = GetCurrentTimestamp();
+
+ /* block acquiring lock for the same reason as pgstat_report_autovac() */
+ entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_RELATION, MyDatabaseId,
+ relid, false);
+
+ shtabentry = (PgStatShared_Relation *) entry_ref->shared_stats;
+ tabentry = &shtabentry->stats;
+
+
+ tabentry->last_skipped_autoanalyze_time = ts;
+ tabentry->skipped_autoanalyze_count++;
+
+ pgstat_unlock_entry(entry_ref);
+}
+
/*
* Report that the table was just analyzed and flush IO statistics.
*
diff --git a/src/backend/utils/adt/pgstatfuncs.c b/src/backend/utils/adt/pgstatfuncs.c
index 5f907335990..ae8e8fd90f6 100644
--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -84,6 +84,12 @@ PG_STAT_GET_RELENTRY_INT64(mod_since_analyze)
/* pg_stat_get_numscans */
PG_STAT_GET_RELENTRY_INT64(numscans)
+/* pg_stat_get_skipped_autoanalyze_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autoanalyze_count)
+
+/* pg_stat_get_skipped_autovacuum_count */
+PG_STAT_GET_RELENTRY_INT64(skipped_autovacuum_count)
+
/* pg_stat_get_tuples_deleted */
PG_STAT_GET_RELENTRY_INT64(tuples_deleted)
@@ -170,6 +176,12 @@ PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_vacuum_time)
/* pg_stat_get_lastscan */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(lastscan)
+/* pg_stat_get_last_skipped_autoanalyze_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autoanalyze_time)
+
+/* pg_stat_get_last_skipped_autovacuum_time */
+PG_STAT_GET_RELENTRY_TIMESTAMPTZ(last_skipped_autovacuum_time)
+
/* pg_stat_get_stat_reset_time */
PG_STAT_GET_RELENTRY_TIMESTAMPTZ(stat_reset_time)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 84e7adde0e5..3ca1d6762f1 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -5667,6 +5667,22 @@
proname => 'pg_stat_get_total_autoanalyze_time', provolatile => 's',
proparallel => 'r', prorettype => 'float8', proargtypes => 'oid',
prosrc => 'pg_stat_get_total_autoanalyze_time' },
+{ oid => '8142', descr => 'statistics: last skipped auto analyze time for a table',
+ proname => 'pg_stat_get_last_skipped_autoanalyze_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autoanalyze_time' },
+{ oid => '8143', descr => 'statistics: last skipped auto vacuum time for a table',
+ proname => 'pg_stat_get_last_skipped_autovacuum_time', provolatile => 's',
+ proparallel => 'r', prorettype => 'timestamptz', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_last_skipped_autovacuum_time' },
+{ oid => '8144', descr => 'statistics: number of skipped auto analyzes for a table',
+ proname => 'pg_stat_get_skipped_autoanalyze_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autoanalyze_count' },
+{ oid => '8145', descr => 'statistics: number of skipped auto vacuum for a table',
+ proname => 'pg_stat_get_skipped_autovacuum_count', provolatile => 's',
+ proparallel => 'r', prorettype => 'int8', proargtypes => 'oid',
+ prosrc => 'pg_stat_get_skipped_autovacuum_count' },
{ oid => '1936', descr => 'statistics: currently active backend IDs',
proname => 'pg_stat_get_backend_idset', prorows => '100', proretset => 't',
provolatile => 's', proparallel => 'r', prorettype => 'int4',
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index 216b93492ba..bd6be54dfb3 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -460,6 +460,11 @@ typedef struct PgStat_StatTabEntry
TimestampTz last_autoanalyze_time; /* autovacuum initiated */
PgStat_Counter autoanalyze_count;
+ TimestampTz last_skipped_autovacuum_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autovacuum_count;
+ TimestampTz last_skipped_autoanalyze_time; /* autovacuum initiated */
+ PgStat_Counter skipped_autoanalyze_count;
+
PgStat_Counter total_vacuum_time; /* times in milliseconds */
PgStat_Counter total_autovacuum_time;
PgStat_Counter total_analyze_time;
@@ -679,6 +684,9 @@ extern void pgstat_report_analyze(Relation rel,
PgStat_Counter livetuples, PgStat_Counter deadtuples,
bool resetcounter, TimestampTz starttime);
+extern void pgstat_report_skipped_vacuum(Oid relid);
+extern void pgstat_report_skipped_analyze(Oid relid);
+
/*
* If stats are enabled, but pending data hasn't been prepared yet, call
* pgstat_assoc_relation() to do so. See its comment for why this is done
diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out
index 32bea58db2c..1ca129ad2a4 100644
--- a/src/test/regress/expected/rules.out
+++ b/src/test/regress/expected/rules.out
@@ -1836,12 +1836,16 @@ pg_stat_all_tables| SELECT c.oid AS relid,
pg_stat_get_ins_since_vacuum(c.oid) AS n_ins_since_vacuum,
pg_stat_get_last_vacuum_time(c.oid) AS last_vacuum,
pg_stat_get_last_autovacuum_time(c.oid) AS last_autovacuum,
+ pg_stat_get_last_skipped_autovacuum_time(c.oid) AS last_skipped_autovacuum,
pg_stat_get_last_analyze_time(c.oid) AS last_analyze,
pg_stat_get_last_autoanalyze_time(c.oid) AS last_autoanalyze,
+ pg_stat_get_last_skipped_autoanalyze_time(c.oid) AS last_skipped_autoanalyze,
pg_stat_get_vacuum_count(c.oid) AS vacuum_count,
pg_stat_get_autovacuum_count(c.oid) AS autovacuum_count,
+ pg_stat_get_skipped_autovacuum_count(c.oid) AS skipped_autovacuum_count,
pg_stat_get_analyze_count(c.oid) AS analyze_count,
pg_stat_get_autoanalyze_count(c.oid) AS autoanalyze_count,
+ pg_stat_get_skipped_autoanalyze_count(c.oid) AS skipped_autoanalyze_count,
pg_stat_get_total_vacuum_time(c.oid) AS total_vacuum_time,
pg_stat_get_total_autovacuum_time(c.oid) AS total_autovacuum_time,
pg_stat_get_total_analyze_time(c.oid) AS total_analyze_time,
@@ -2288,12 +2292,16 @@ pg_stat_sys_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
@@ -2343,12 +2351,16 @@ pg_stat_user_tables| SELECT relid,
n_ins_since_vacuum,
last_vacuum,
last_autovacuum,
+ last_skipped_autovacuum,
last_analyze,
last_autoanalyze,
+ last_skipped_autoanalyze,
vacuum_count,
autovacuum_count,
+ skipped_autovacuum_count,
analyze_count,
autoanalyze_count,
+ skipped_autoanalyze_count,
total_vacuum_time,
total_autovacuum_time,
total_analyze_time,
--
2.43.0
--Multipart=_Tue__24_Mar_2026_15_11_33_+0900_PyndxOyIILJh_XYK--
^ permalink raw reply [nested|flat] 307+ messages in thread
end of thread, other threads:[~2026-03-24 04:09 UTC | newest]
Thread overview: 307+ messages (download: mbox mbox.gz follow: Atom feed)
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2019-07-15 23:48 SegFault on 9.6.14 Jerry Sievers <gsievers19@comcast.net>
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2019-07-16 00:22 ` Jerry Sievers <gsievers19@comcast.net>
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2019-07-17 00:44 ` Thomas Munro <thomas.munro@gmail.com>
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2019-07-17 03:19 ` Thomas Munro <thomas.munro@gmail.com>
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2019-07-23 03:40 ` Thomas Munro <thomas.munro@gmail.com>
2019-07-23 11:58 ` Amit Kapila <amit.kapila16@gmail.com>
2019-07-26 04:13 ` Amit Kapila <amit.kapila16@gmail.com>
2019-07-27 02:59 ` Thomas Munro <thomas.munro@gmail.com>
2019-07-27 05:58 ` Amit Kapila <amit.kapila16@gmail.com>
2019-07-30 18:35 ` Robert Haas <robertmhaas@gmail.com>
2019-07-31 04:07 ` Amit Kapila <amit.kapila16@gmail.com>
2019-07-31 04:30 ` Tom Lane <tgl@sss.pgh.pa.us>
2019-07-17 00:57 ` Jerry Sievers <gsievers19@comcast.net>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
2026-03-24 04:09 [PATCH] Track skipped tables during autovacuum and autoanalyze Yugo Nagata <nagata@sraoss.co.jp>
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