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Re: Does pg_reset_stats() influence autovacuum?

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Kouber Saparev <postgres(at)saparev(dot)com>
Cc: "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
Subject: Re: Does pg_reset_stats() influence autovacuum?
Date: 2012-08-24 02:47:48
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
On Thu, Aug 23, 2012 at 10:59:56AM +0300, Kouber Saparev wrote:
> Hello,
> Does resetting of stats through pg_reset_stats() influence the way
> autovacuum determines whether autovacuum_vacuum_scale_factor and
> autovacuum_analyze_scale_factor settings are reached?
> In other words, are the n_live_tup and n_dead_tup values kept somewhere
> internally, apart pg_stat_all_tables?

No.  pg_reset_stats() will affect autovacuum, usually in a bad way.

  Bruce Momjian  <bruce(at)momjian(dot)us>

  + It's impossible for everything to be true. +

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