Received: from localhost (unknown [200.46.204.182]) by postgresql.org (Postfix) with ESMTP id 0B1FC9FB707 for ; Wed, 10 Oct 2007 21:49:29 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.182]) (amavisd-maia, port 10024) with ESMTP id 09190-05-3 for ; Wed, 10 Oct 2007 21:49:14 -0300 (ADT) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.5 Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.170]) by postgresql.org (Postfix) with ESMTP id 637D39FB56D for ; Wed, 10 Oct 2007 21:49:25 -0300 (ADT) Received: by ug-out-1314.google.com with SMTP id j3so374294ugf for ; Wed, 10 Oct 2007 17:49:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=3o0f8Trr60VkQFOUDbkO0Z2KtZmldgFhlCRKMlt+UQY=; b=mjlW5Wkjj6u15h2CY9PpMrNenxr6XeQQf6ruBWwA7w/jk4+ck2jIvlpHVtS73kVG5IzE0YCqDeHBoDU8T3MoUXwAfUnLQ7rHBBbxhcZhRoF/LFKsSKwWPMww7X7P4VTlHvfEggfjXDeGh6SrUiM8NBbHu6ExH9BVz30S3xWy4cc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=ICT1Q4WEDcv+T9vpA2oxaFkQ8nFR8mUVbfRJsbD6LcU9osNe4Un1BxJGfi6SK2IxV7Dx2iPAZfuisDrzo7zOQCQXIMFJWdMDhSNKruM2e1a6eUM4/5CDKdfxpKMX3y6toqC//jYl3Ie5uQkw8Z7FDpZssGaQKTu2qw/s8hK3Ga8= Received: by 10.67.28.2 with SMTP id f2mr2563670ugj.1192063763327; Wed, 10 Oct 2007 17:49:23 -0700 (PDT) Received: by 10.67.29.6 with HTTP; Wed, 10 Oct 2007 17:49:23 -0700 (PDT) Message-ID: Date: Wed, 10 Oct 2007 19:49:23 -0500 From: "Scott Marlowe" To: "Radhika S" Subject: Re: Shared Buffer setting in postgresql.conf Cc: pgsql-performance@postgresql.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200710/120 X-Sequence-Number: 27142 On 10/10/07, Radhika S 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.