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* 9.5alpha1 vs 9.4
@ 2015-07-05 11:10 Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
0 siblings, 2 replies; 7+ messages in thread
From: Mkrtchyan, Tigran @ 2015-07-05 11:10 UTC (permalink / raw)
To: pgsql-performance
Hi,
today I have update my test system to 9.5alpha1.
Most of the operations are ok, except delete.
I get ~1000 times slower!
chimera=# SELECT
(total_time / 1000 )::numeric(10,2) as total_secs,
(total_time/calls)::numeric(10,2) as average_time_ms, calls,
query
FROM pg_stat_statements where userid = 16384
ORDER BY 1 DESC
LIMIT 10;
total_secs | average_time_ms | calls | query
------------+-----------------+-------+------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------
255.88 | 566.11 | 452 | DELETE FROM t_inodes WHERE ipnfsid=$1 AND inlink = ?
0.13 | 0.13 | 1006 | insert into t_dirs (iparent, iname, ipnfsid) (select $1 as iparent, $2 as iname, $3 as ipnfsid where not exists (select ? from t_dirs where iparent=$4 and iname=$5))
0.11 | 0.02 | 6265 | SELECT isize,inlink,itype,imode,iuid,igid,iatime,ictime,imtime,icrtime,igeneration FROM t_inodes WHERE ipnfsid=$1
0.03 | 0.03 | 1002 | INSERT INTO t_inodes VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13)
0.02 | 0.02 | 1002 | UPDATE t_inodes SET inlink=inlink +$1,imtime=$2,ictime=$3,igeneration=igeneration+? WHERE ipnfsid=$4
0.02 | 0.03 | 905 | UPDATE t_inodes SET inlink=inlink -$1,imtime=$2,ictime=$3,igeneration=igeneration+? WHERE ipnfsid=$4
0.02 | 0.01 | 2000 | SELECT ilocation,ipriority,ictime,iatime FROM t_locationinfo WHERE itype=$1 AND ipnfsid=$2 AND istate=? ORDER BY ipriority DESC
0.01 | 0.01 | 906 | SELECT ipnfsid FROM t_dirs WHERE iname=$1 AND iparent=$2
0.01 | 0.01 | 453 | DELETE FROM t_dirs WHERE iname=$1 AND iparent=$2
chimera=# \d t_inodes
Table "public.t_inodes"
Column | Type | Modifiers
-------------+--------------------------+------------------------
ipnfsid | character varying(36) | not null
itype | integer | not null
imode | integer | not null
inlink | integer | not null
iuid | integer | not null
igid | integer | not null
isize | bigint | not null
iio | integer | not null
ictime | timestamp with time zone | not null
iatime | timestamp with time zone | not null
imtime | timestamp with time zone | not null
icrtime | timestamp with time zone | not null default now()
igeneration | bigint | not null default 0
Indexes:
"t_inodes_pkey" PRIMARY KEY, btree (ipnfsid)
Referenced by:
TABLE "t_access_latency" CONSTRAINT "t_access_latency_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_acl" CONSTRAINT "t_acl_fkey" FOREIGN KEY (rs_id) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_dirs" CONSTRAINT "t_dirs_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid)
TABLE "t_inodes_checksum" CONSTRAINT "t_inodes_checksum_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_inodes_data" CONSTRAINT "t_inodes_data_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_level_1" CONSTRAINT "t_level_1_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_level_2" CONSTRAINT "t_level_2_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_level_3" CONSTRAINT "t_level_3_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_level_4" CONSTRAINT "t_level_4_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_level_5" CONSTRAINT "t_level_5_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_level_6" CONSTRAINT "t_level_6_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_level_7" CONSTRAINT "t_level_7_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_locationinfo" CONSTRAINT "t_locationinfo_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_retention_policy" CONSTRAINT "t_retention_policy_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_storageinfo" CONSTRAINT "t_storageinfo_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
TABLE "t_tags" CONSTRAINT "t_tags_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES t_inodes(ipnfsid)
Triggers:
tgr_locationinfo_trash BEFORE DELETE ON t_inodes FOR EACH ROW EXECUTE PROCEDURE f_locationinfo2trash()
Any ideas?
Tigran.
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^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: 9.5alpha1 vs 9.4
@ 2015-07-05 11:46 Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
parent: Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
1 sibling, 0 replies; 7+ messages in thread
From: Mkrtchyan, Tigran @ 2015-07-05 11:46 UTC (permalink / raw)
To: pgsql-performance
And this is with 9.4 in the same hardware ( restored from backup)
0.35 | 0.35 | 1002 | DELETE FROM t_inodes WHERE ipnfsid=$1 AND inlink = ?
0.16 | 0.16 | 1006 | insert into t_dirs (iparent, iname, ipnfsid) (select $1 as iparent, $2 as iname, $3 as ipnfsid where not exists (select
? from t_dirs where iparent=$4 and iname=$5))
0.15 | 0.02 | 8026 | SELECT isize,inlink,itype,imode,iuid,igid,iatime,ictime,imtime,icrtime,igeneration FROM t_inodes WHERE ipnfsid=$1
0.06 | 0.06 | 1002 | INSERT INTO t_inodes VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13)
0.04 | 0.02 | 2004 | UPDATE t_inodes SET inlink=inlink -$1,imtime=$2,ictime=$3,igeneration=igeneration+? WHERE ipnfsid=$4
0.03 | 0.01 | 2000 | SELECT ilocation,ipriority,ictime,iatime FROM t_locationinfo WHERE itype=$1 AND ipnfsid=$2 AND istate=? ORDER BY ipriori
ty DESC
0.02 | 0.02 | 1002 | UPDATE t_inodes SET inlink=inlink +$1,imtime=$2,ictime=$3,igeneration=igeneration+? WHERE ipnfsid=$4
0.02 | 0.01 | 2006 | SELECT ipnfsid FROM t_dirs WHERE iname=$1 AND iparent=$2
0.01 | 0.01 | 1006 | DELETE FROM t_dirs WHERE iname=$1 AND iparent=$2
0.00 | 0.00 | 2004 | COMMI
Tigran.
----- Original Message -----
> From: "Mkrtchyan, Tigran" <tigran.mkrtchyan@desy.de>
> To: "pgsql-performance" <pgsql-performance@postgresql.org>
> Sent: Sunday, July 5, 2015 1:10:51 PM
> Subject: [PERFORM] 9.5alpha1 vs 9.4
> Hi,
>
> today I have update my test system to 9.5alpha1.
> Most of the operations are ok, except delete.
> I get ~1000 times slower!
>
>
> chimera=# SELECT
> (total_time / 1000 )::numeric(10,2) as total_secs,
> (total_time/calls)::numeric(10,2) as average_time_ms, calls,
> query
> FROM pg_stat_statements where userid = 16384
> ORDER BY 1 DESC
> LIMIT 10;
> total_secs | average_time_ms | calls |
> query
>
> ------------+-----------------+-------+------------------------------------------------------------------------------------------------------------------------------------------
> -------------------------------
> 255.88 | 566.11 | 452 | DELETE FROM t_inodes WHERE ipnfsid=$1 AND
> inlink = ?
> 0.13 | 0.13 | 1006 | insert into t_dirs (iparent, iname, ipnfsid)
> (select $1 as iparent, $2 as iname, $3 as ipnfsid where not exists (select ?
> from t_dirs where iparent=$4 and iname=$5))
> 0.11 | 0.02 | 6265 | SELECT
> isize,inlink,itype,imode,iuid,igid,iatime,ictime,imtime,icrtime,igeneration
> FROM t_inodes WHERE ipnfsid=$1
> 0.03 | 0.03 | 1002 | INSERT INTO t_inodes
> VALUES($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13)
> 0.02 | 0.02 | 1002 | UPDATE t_inodes SET inlink=inlink
> +$1,imtime=$2,ictime=$3,igeneration=igeneration+? WHERE ipnfsid=$4
> 0.02 | 0.03 | 905 | UPDATE t_inodes SET inlink=inlink
> -$1,imtime=$2,ictime=$3,igeneration=igeneration+? WHERE ipnfsid=$4
> 0.02 | 0.01 | 2000 | SELECT ilocation,ipriority,ictime,iatime FROM
> t_locationinfo WHERE itype=$1 AND ipnfsid=$2 AND istate=? ORDER BY ipriority
> DESC
> 0.01 | 0.01 | 906 | SELECT ipnfsid FROM t_dirs WHERE iname=$1 AND
> iparent=$2
> 0.01 | 0.01 | 453 | DELETE FROM t_dirs WHERE iname=$1 AND
> iparent=$2
>
>
>
>
> chimera=# \d t_inodes
> Table "public.t_inodes"
> Column | Type | Modifiers
> -------------+--------------------------+------------------------
> ipnfsid | character varying(36) | not null
> itype | integer | not null
> imode | integer | not null
> inlink | integer | not null
> iuid | integer | not null
> igid | integer | not null
> isize | bigint | not null
> iio | integer | not null
> ictime | timestamp with time zone | not null
> iatime | timestamp with time zone | not null
> imtime | timestamp with time zone | not null
> icrtime | timestamp with time zone | not null default now()
> igeneration | bigint | not null default 0
> Indexes:
> "t_inodes_pkey" PRIMARY KEY, btree (ipnfsid)
> Referenced by:
> TABLE "t_access_latency" CONSTRAINT "t_access_latency_ipnfsid_fkey" FOREIGN KEY
> (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_acl" CONSTRAINT "t_acl_fkey" FOREIGN KEY (rs_id) REFERENCES
> t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_dirs" CONSTRAINT "t_dirs_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES
> t_inodes(ipnfsid)
> TABLE "t_inodes_checksum" CONSTRAINT "t_inodes_checksum_ipnfsid_fkey" FOREIGN
> KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_inodes_data" CONSTRAINT "t_inodes_data_ipnfsid_fkey" FOREIGN KEY
> (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_level_1" CONSTRAINT "t_level_1_ipnfsid_fkey" FOREIGN KEY (ipnfsid)
> REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_level_2" CONSTRAINT "t_level_2_ipnfsid_fkey" FOREIGN KEY (ipnfsid)
> REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_level_3" CONSTRAINT "t_level_3_ipnfsid_fkey" FOREIGN KEY (ipnfsid)
> REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_level_4" CONSTRAINT "t_level_4_ipnfsid_fkey" FOREIGN KEY (ipnfsid)
> REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_level_5" CONSTRAINT "t_level_5_ipnfsid_fkey" FOREIGN KEY (ipnfsid)
> REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_level_6" CONSTRAINT "t_level_6_ipnfsid_fkey" FOREIGN KEY (ipnfsid)
> REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_level_7" CONSTRAINT "t_level_7_ipnfsid_fkey" FOREIGN KEY (ipnfsid)
> REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_locationinfo" CONSTRAINT "t_locationinfo_ipnfsid_fkey" FOREIGN KEY
> (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_retention_policy" CONSTRAINT "t_retention_policy_ipnfsid_fkey" FOREIGN
> KEY (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_storageinfo" CONSTRAINT "t_storageinfo_ipnfsid_fkey" FOREIGN KEY
> (ipnfsid) REFERENCES t_inodes(ipnfsid) ON DELETE CASCADE
> TABLE "t_tags" CONSTRAINT "t_tags_ipnfsid_fkey" FOREIGN KEY (ipnfsid) REFERENCES
> t_inodes(ipnfsid)
> Triggers:
> tgr_locationinfo_trash BEFORE DELETE ON t_inodes FOR EACH ROW EXECUTE PROCEDURE
> f_locationinfo2trash()
>
>
>
> Any ideas?
>
> Tigran.
>
>
>
> --
> Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-performance
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^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: 9.5alpha1 vs 9.4
@ 2015-07-05 12:54 Andres Freund <andres@anarazel.de>
parent: Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
1 sibling, 1 reply; 7+ messages in thread
From: Andres Freund @ 2015-07-05 12:54 UTC (permalink / raw)
To: Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>; +Cc: pgsql-performance
Hi,
On 2015-07-05 13:10:51 +0200, Mkrtchyan, Tigran wrote:
> today I have update my test system to 9.5alpha1.
> Most of the operations are ok, except delete.
> I get ~1000 times slower!
> 255.88 | 566.11 | 452 | DELETE FROM t_inodes WHERE ipnfsid=$1 AND inlink = ?
That certainly should not be the case. Could you show the query plan for
this statement in both versions? Any chance that there's a parameter
type mismatch for $1?
Greetings,
Andres Freund
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^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: 9.5alpha1 vs 9.4
@ 2015-07-05 14:33 Tom Lane <tgl@sss.pgh.pa.us>
parent: Andres Freund <andres@anarazel.de>
0 siblings, 1 reply; 7+ messages in thread
From: Tom Lane @ 2015-07-05 14:33 UTC (permalink / raw)
To: Andres Freund <andres@anarazel.de>; +Cc: Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>; pgsql-performance
Andres Freund <andres@anarazel.de> writes:
> On 2015-07-05 13:10:51 +0200, Mkrtchyan, Tigran wrote:
>> today I have update my test system to 9.5alpha1.
>> Most of the operations are ok, except delete.
>> I get ~1000 times slower!
>> 255.88 | 566.11 | 452 | DELETE FROM t_inodes WHERE ipnfsid=$1 AND inlink = ?
> That certainly should not be the case. Could you show the query plan for
> this statement in both versions?
EXPLAIN ANALYZE, please. I'm wondering about a missing index on some
foreign-key-involved column. That would show up as excessive time in
the relevant trigger ...
regards, tom lane
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^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: 9.5alpha1 vs 9.4
@ 2015-07-05 17:16 Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
parent: Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 1 reply; 7+ messages in thread
From: Mkrtchyan, Tigran @ 2015-07-05 17:16 UTC (permalink / raw)
To: Tom Lane <tgl@sss.pgh.pa.us>; +Cc: Andres Freund <andres@anarazel.de>; pgsql-performance
Thanks for the hin. My bad. The backup db and 9.5 had a different type on
one of the foreign-key constrains char(36) vs varchar(36).
The schema was screwed couple of days ago, byt performance numbers I checked only
after migration to 9.5.
Sorry for the noise.
Tigran.
----- Original Message -----
> From: "Tom Lane" <tgl@sss.pgh.pa.us>
> To: "Andres Freund" <andres@anarazel.de>
> Cc: "Mkrtchyan, Tigran" <tigran.mkrtchyan@desy.de>, "pgsql-performance" <pgsql-performance@postgresql.org>
> Sent: Sunday, July 5, 2015 4:33:25 PM
> Subject: Re: [PERFORM] 9.5alpha1 vs 9.4
> Andres Freund <andres@anarazel.de> writes:
>> On 2015-07-05 13:10:51 +0200, Mkrtchyan, Tigran wrote:
>>> today I have update my test system to 9.5alpha1.
>>> Most of the operations are ok, except delete.
>>> I get ~1000 times slower!
>
>>> 255.88 | 566.11 | 452 | DELETE FROM t_inodes WHERE ipnfsid=$1 AND
>>> inlink = ?
>
>> That certainly should not be the case. Could you show the query plan for
>> this statement in both versions?
>
> EXPLAIN ANALYZE, please. I'm wondering about a missing index on some
> foreign-key-involved column. That would show up as excessive time in
> the relevant trigger ...
>
> regards, tom lane
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^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: 9.5alpha1 vs 9.4
@ 2015-07-06 16:45 Josh Berkus <josh@agliodbs.com>
parent: Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
0 siblings, 0 replies; 7+ messages in thread
From: Josh Berkus @ 2015-07-06 16:45 UTC (permalink / raw)
To: Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>; Tom Lane <tgl@sss.pgh.pa.us>; +Cc: Andres Freund <andres@anarazel.de>; pgsql-performance
On 07/05/2015 10:16 AM, Mkrtchyan, Tigran wrote:
> Thanks for the hin. My bad. The backup db and 9.5 had a different type on
> one of the foreign-key constrains char(36) vs varchar(36).
>
> The schema was screwed couple of days ago, byt performance numbers I checked only
> after migration to 9.5.
Thank you for testing!
Can you re-run your tests with the fixed schema? How does it look?
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
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^ permalink raw reply [nested|flat] 7+ messages in thread
* Re: 9.5alpha1 vs 9.4
@ 2015-07-06 21:14 Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
0 siblings, 0 replies; 7+ messages in thread
From: Mkrtchyan, Tigran @ 2015-07-06 21:14 UTC (permalink / raw)
To: Josh Berkus <josh@agliodbs.com>; +Cc: Andres Freund <andres@anarazel.de>; pgsql-performance; Tom Lane <tgl@sss.pgh.pa.us>
On Jul 6, 2015 18:45, Josh Berkus <josh@agliodbs.com> wrote:
>
> On 07/05/2015 10:16 AM, Mkrtchyan, Tigran wrote:
> > Thanks for the hin. My bad. The backup db and 9.5 had a different type on
> > one of the foreign-key constrains char(36) vs varchar(36).
> >
> > The schema was screwed couple of days ago, byt performance numbers I checked only
> > after migration to 9.5.
>
> Thank you for testing!
>
> Can you re-run your tests with the fixed schema? How does it look?
With fixed schema performance equal to 9.4. I have updated my code to use ON CONFLICT statement. ~5% better compared with INSERT WHERE NOT EXIST. Really cool! Thanks.
Tigran.
>
> --
> Josh Berkus
> PostgreSQL Experts Inc.
> http://pgexperts.com
>
>
> --
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^ permalink raw reply [nested|flat] 7+ messages in thread
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2015-07-05 11:10 9.5alpha1 vs 9.4 Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
2015-07-05 11:46 ` Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
2015-07-05 12:54 ` Andres Freund <andres@anarazel.de>
2015-07-05 14:33 ` Tom Lane <tgl@sss.pgh.pa.us>
2015-07-05 17:16 ` Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
2015-07-06 16:45 ` Josh Berkus <josh@agliodbs.com>
2015-07-06 21:14 Re: 9.5alpha1 vs 9.4 Mkrtchyan, Tigran <tigran.mkrtchyan@desy.de>
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