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From: Cédric Villemain <cedric@2ndquadrant.com>
To: pgsql-admin@postgresql.org
Cc: Baptiste LHOSTE <blhoste@alaloop.com>
Cc: Sylvain CAILLET <scaillet@alaloop.com>
Subject: Re: Autoanalyze of the autovacuum daemon ...
Date: Mon, 5 Nov 2012 16:12:42 +0100
Message-ID: <201211051612.45865.cedric@2ndquadrant.com> (raw)
In-Reply-To: <216101410.8465931.1352123453261.JavaMail.root@alaloop.com>
References: <216101410.8465931.1352123453261.JavaMail.root@alaloop.com>

> relname | last_autoanalyse              | reltuples   | relpages |
> n_tup_ins + n_tup_upd + n_tup_del
> 
>         | (from pg_stat_all_tables)     |             |          | (from
>         | pg_stat_all_tables)
> 
> table1  | 2012-10-15 21:12:04.362647+02 | 2.53296e+06 |    50789 | 28542483
> table2  | 2012-10-15 18:27:30.181583+02 | 2.57144e+06 |    54833 | 31127737
> table3  | 2012-10-15 13:13:09.569758+02 | 2.58646e+06 |    63208 | 27167944
> table4  | 2012-10-15 12:05:39.094652+02 | 2.58655e+06 |    63181 | 27160409
> table5  | 2012-10-15 12:05:32.347738+02 | 2.58611e+06 |    57272 | 27171661
> table6  | 2012-10-15 10:43:40.558078+02 | 2.57925e+06 |    63145 | 27155875
> table7  | 2012-10-15 10:40:25.469625+02 | 2.59551e+06 |    57254 | 27161876
> table8  | 2012-10-15 10:25:10.776152+02 | 2.56987e+06 |    63147 | 27177907
> table9  | 2012-10-15 09:30:17.407181+02 |  2.5923e+06 |    57231 | 27152953
> table10 | 2012-10-15 08:29:25.427207+02 | 2.56237e+06 |    63085 | 31770581
> table11 | 2012-10-15 08:26:14.550742+02 | 2.56503e+06 |    63065 | 31769609
> table12 | 2012-10-15 06:39:01.737914+02 | 2.57833e+06 |    63023 | 31767543
> table13 | 2012-10-15 06:35:36.43683+02  | 2.57217e+06 |    63047 | 31759954
> table14 | 2012-10-15 05:08:02.858623+02 | 2.59068e+06 |    57119 | 27154555
> table15 | 2012-10-15 04:40:48.695142+02 | 2.57449e+06 |    63002 | 31768034
> table16 | 2012-10-10 07:51:49.625226+02 | 2.48584e+06 |    54014 | 22110223
> table17 | 2012-10-09 10:03:36.649331+02 | 2.58047e+06 |    63742 | 23423257
> table18 | 2012-10-09 10:02:13.549362+02 | 2.57854e+06 |    63585 | 23364035
> table19 | 2012-10-09 09:18:55.447895+02 | 2.58851e+06 |    63516 | 23375180


So that an auto-ANALYZE should run each 2.5-3 hours. 
If it does not proceed, check that you do not have some process still doing 
manual maintenance or DDL on those tables, they might lock the table and kill 
autovacuum
(check the pg_stat_activity, and set log_autovacuum_min_duration=0 to track 
all job done by autovacuum)

-- 
Cédric Villemain +33 (0)6 20 30 22 52
http://2ndQuadrant.fr/
PostgreSQL: Support 24x7 - Développement, Expertise et Formation

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