From: Brad Nicholson <bnichols@ca.afilias.info>
To: Charles.Hou <ivan.hou@msa.hinet.net>
Cc: pgsql-admin@postgresql.org
Subject: Re: the right time to vacuum database?
Date: Wed, 06 Jun 2007 09:57:44 -0400
Message-ID: <1181138264.27654.105.camel@dba5.int.libertyrms.com> (raw)
In-Reply-To: <1181087961.969587.237660@g37g2000prf.googlegroups.com>
References: <1181039589.643323.59660@r19g2000prf.googlegroups.com>
<1181049167.27654.55.camel@dba5.int.libertyrms.com>
<1181087961.969587.237660@g37g2000prf.googlegroups.com>
On Tue, 2007-06-05 at 16:59 -0700, Charles.Hou wrote:
> On 6 5 , 9 12 , bnich...@ca.afilias.info (Brad Nicholson) wrote:
> > On Tue, 2007-06-05 at 03:33 -0700, Charles.Hou wrote:
> > > how can i know that it's the time to vacuumdb? i set the crontab to
> > > vacuumdb 3 times in one day. because my database size increase from
> > > 440MB to 460MB in 8 hours.
> >
> > Have you looked at autovaccum? It can handle this for you.
> >
> > If not, you need to examine the output of VACUUM VERBOSE or pg_stattuple
> > (in contrib) and set a policy based on the output.
> >
> > It's entirely possible that some tables will need to get vacuumed
> > frequently, and others will not.
> >
> > --
> > Brad Nicholson 416-673-4106
> > Database Administrator, Afilias Canada Corp.
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 3: Have you checked our extensive FAQ?
> >
> > http://www.postgresql.org/docs/faq
>
> where is the contrib directory? i can't find it.
If you built your own binaries from source, there is a directory called
contrib under the root of your source tree. You'll need to build the
modules.
If you installed a package, you'll probably need to grab a contrib
package for your version as well (I'm not overly familiar with the
pre-packaged binaries). Look in the following directory for your
binaries:
/path_to_postgres/doc/contrib
If the contrib stuff is installed, you'll find the appropriate docs
there.
--
Brad Nicholson 416-673-4106
Database Administrator, Afilias Canada Corp.
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To: pgsql-sql@postgresql.org
Cc: bnichols@ca.afilias.info, ivan.hou@msa.hinet.net, pgsql-admin@postgresql.org
Subject: Re: the right time to vacuum database?
In-Reply-To: <1181138264.27654.105.camel@dba5.int.libertyrms.com>
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