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Message-ID: <558d0566-54dd-494c-8828-f8087e7f8df4@aklaver.com>
Date: Thu, 16 May 2024 08:39:43 -0700
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User-Agent: Mozilla Thunderbird
Subject: Re: Restore of a reference database kills the auto analyze
 processing.
To: HORDER Philip <Phil.Horder@uk.thalesgroup.com>,
 "pgsql-general@lists.postgresql.org" <pgsql-general@lists.postgresql.org>
References: <e580793d24a04e2589fd6e7c43554e1e@uk.thalesgroup.com>
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From: Adrian Klaver <adrian.klaver@aklaver.com>
In-Reply-To: <e580793d24a04e2589fd6e7c43554e1e@uk.thalesgroup.com>
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On 5/16/24 07:38, HORDER Philip wrote:
> Classified as: {OPEN}
> 
>> Did you have chance to do below?
>> Using psql do
> 
>> \x
>> select * from pg_stat_all_tables where relname = 'a.accp';
> 
> Sorry, missed that bit.
>  From this output you can see that no stats have been collected since the last two overnight updates.

Still your contention was that autovacuum quit running after the initial 
restore and that is not the case. Assuming this is the instance you 
restored on May 2 2024 then approximate counts are:

autovacuum_count   1888/13 days = 145 autovacuums/day = 6/hour

autoanalyze_count  1715/13 	= 132 autoanalyze/day = 5.5/hr


> 
> postgres=# select * from pg_stat_all_tables where relname='accp';
> -[ RECORD 1 ]-------+--------------------------------
> relid               | 811486381
> schemaname          | a
> relname             | accp
> seq_scan            | 1654767
> seq_tup_read        | 901811880
> idx_scan            | 146070383
> idx_tup_fetch       | 305949969
> n_tup_ins           | 2056948
> n_tup_upd           | 0
> n_tup_del           | 1662699
> n_tup_hot_upd       | 0
> n_live_tup          | 294
> n_dead_tup          | 75162
> n_mod_since_analyze | 0
> n_ins_since_vacuum  | 75162
> last_vacuum         |
> last_autovacuum     | 2024-05-15 03:25:16.007386+00
> last_analyze        |
> last_autoanalyze    | 2024-05-15 03:25:16.008873+00
> vacuum_count        | 0
> autovacuum_count    | 1888
> analyze_count       | 19836
> autoanalyze_count   | 1715
> 
> 
> Phil Horder
> Database Mechanic
> 
> Thales
> Land & Air Systems
> 
> 
> {OPEN}
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-- 
Adrian Klaver
adrian.klaver@aklaver.com