| 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 |
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| 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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