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Re: Shared Buffer setting in postgresql.conf

From: Ow Mun Heng <Ow(dot)Mun(dot)Heng(at)wdc(dot)com>
To: Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
Cc: Radhika S <radhika(dot)sambamurti(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Shared Buffer setting in postgresql.conf
Date: 2007-10-18 01:33:46
Message-ID: 1192671226.27637.8.camel@neuromancer.home.net (view raw or flat)
Thread:
Lists: pgsql-performance
On Wed, 2007-10-10 at 19:49 -0500, Scott Marlowe wrote:
> On 10/10/07, Radhika S <radhika(dot)sambamurti(at)gmail(dot)com> wrote:
> > Thank you scott.
> >
> > We plan on upgrading to Postgres 8.2 very soon.
> > Would it be safe to say I can make my SHARED BUFFER setting 200MB (I have
> > 2GB memory ).
> > The default is 24MB.
> 
> On a dedicated db machine with 2 Gigs of ram 500Meg is fine.  I run
> 768 Meg shared_buffers on a machine that runs postgresql 8.2 and
> apache/php and routinely have 1Gig of kernel cache on it.
> 
> So yeah, 200M shared_buffers should be no problem.

I have 768MB of ram and I'm allocatting 300MB as shared buffers.


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