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Re: Vacuum goes worse

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Stéphane Schildknecht <stephane(dot)schildknecht(at)postgresqlfr(dot)org>
Cc: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Vacuum goes worse
Date: 2007-10-16 15:30:31
Message-ID: 17051.1192548631@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-performance
=?ISO-8859-1?Q?St=E9phane_Schildknecht?= <stephane(dot)schildknecht(at)postgresqlfr(dot)org> writes:
> Tom Lane a crit :
>> The real question is how often do rows get updated?  I suspect you
>> probably need to vacuum this table more than once a day.

> To be honest, I suspect it too. But, I have been told by people using
> that database they can't do vacuum more frequently than once in a day as
> it increases the time to achieve concurrent operations.

vacuum_cost_delay can help here.

			regards, tom lane

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