From: Kouber Saparev <postgres@saparev.com>
To: pgsql-admin@postgresql.org
Subject: Re: Does pg_reset_stats() influence autovacuum?
Date: Tue, 28 Aug 2012 11:36:21 +0300
Message-ID: <k1hvu5$c8g$1@ger.gmane.org> (raw)
In-Reply-To: <20120824024748.GA5965@momjian.us>
References: <5035E2FC.2050805@saparev.com>
<20120824024748.GA5965@momjian.us>
On 08/24/2012 05:47 AM, Bruce Momjian wrote:
> On Thu, Aug 23, 2012 at 10:59:56AM +0300, Kouber Saparev wrote:
>> Hello,
>>
>> Does resetting of stats through pg_reset_stats() influence the way
>> autovacuum determines whether autovacuum_vacuum_scale_factor and
>> autovacuum_analyze_scale_factor settings are reached?
>>
>> In other words, are the n_live_tup and n_dead_tup values kept somewhere
>> internally, apart pg_stat_all_tables?
>
> No. pg_reset_stats() will affect autovacuum, usually in a bad way.
>
So, I guess the only safe moment to reset stats is right after manual
vacuum analyze.
Thanks.
--
Kouber Saparev
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To: pgsql-admin@postgresql.org
Cc: postgres@saparev.com
Subject: Re: Does pg_reset_stats() influence autovacuum?
In-Reply-To: <k1hvu5$c8g$1@ger.gmane.org>
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