Re: slow query

What about REINDEXing and other DB tricks?
Do you use any of these regularly?
Thanks.

Oleg

-----Original Message-----
From: Clarence Gardner [mailto:clarence@silcom.com]
Sent: Monday, February 24, 2003 10:28 AM
To: Robert Treat
Cc: Oleg Lebedev; Josh Berkus; pgsql-performance@postgresql.org
Subject: Re: [PERFORM] slow query


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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