I've been digging around in the code and found where we are executing the
VACUUM command. VACUUM ANALYZE is executed every 15 minutes. We haven't
tried VACUUM FULL ANALYZE. I think I read that using FULL is a good idea
once a day or something. Just doing a VACUUM ANALYZE doesn't seem to be
preventing our problem. Thank you for the responses.
nid
----- Original Message -----
From: "Christopher Kings-Lynne" <chriskl@familyhealth.com.au>
To: "MK Spam" <mk_spam@comcast.net>
Cc: <pgsql-performance@postgresql.org>
Sent: Monday, November 24, 2003 7:13 PM
Subject: Re: [PERFORM] Where to start for performance problem?
> > The archives of this list provides many ideas for improving performance,
> > but the problem we are having is gradually degrading performance ending
> > in postgres shutting down. So it's not a matter of optimizing a complex
> > query to take 5 seconds instead of 60 seconds. >From what I can tell we
> > are using the VACUUM command on a schedule but it doesn't seem to
> > prevent the database from becoming "congested" as we refer to it. :]
>
> Our busy website has a cronjob that runs VACUUM ANALYZE once an hour
> (vacuumdb -a -q -z).
>
> Have you tried going 'VACUUM FULL ANALYZE' (vacuumdb -a -q -z -f)
> instead of a dump and reload?
>
> Chris
>
>
>