Re: slow query - Mailing list pgsql-performance

From Clarence Gardner
Subject Re: slow query
Date
Msg-id Pine.LNX.4.44.0302240925360.25665-100000@liberty.sba2.netlojix.net
Whole thread Raw
In response to Re: slow query  (Robert Treat <xzilla@users.sourceforge.net>)
Responses Re: slow query  (Robert Treat <xzilla@users.sourceforge.net>)
Re: slow query  (Rod Taylor <rbt@rbt.ca>)
Re: slow query  (Andrew Sullivan <andrew@libertyrms.info>)
List pgsql-performance
On 24 Feb 2003, Robert Treat wrote:

>
> If your seeing wildly dramatic improvments from vacuum full, you might
> want to look into running regular vacuums more often (especially for
> high turnover tables), increase your max_fsm_relations to 1000, and
> increasing your max_fsm_pages.

I don't know about the settings you mention, but a frequent vacuum
does not at all obviate a vacuum full. My database is vacuumed every
night, but a while ago I found that a vacuum full changed a simple
single-table query from well over 30 seconds to one or two. We now
do a vacuum full every night.



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