X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by postgresql.org (Postfix) with ESMTP id 9C39F9DC9D3 for ; Mon, 27 Feb 2006 09:17:34 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 19537-06 for ; Mon, 27 Feb 2006 09:17:37 -0400 (AST) X-Greylist: domain auto-whitelisted by SQLgrey- Received: from zproxy.gmail.com (zproxy.gmail.com [64.233.162.192]) by postgresql.org (Postfix) with ESMTP id 465129DCB50 for ; Mon, 27 Feb 2006 09:17:32 -0400 (AST) Received: by zproxy.gmail.com with SMTP id 8so885968nzo for ; Mon, 27 Feb 2006 05:17:35 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=I3ZyR9iZtxHXTNyuFRjBNjRuZ3E0mcvt5O0/OvTQgg2TTpcHOAdA9cAQUBnEYKI3fZ3b42/sv41ogmz+uH9IekGAfZstx8hrjyV1VFODBrzpVlWYz4vDyhg3KMkosiDzEw36ZpwIAP8CFYyJ+QL+a+GGoAtcohloAUOoxAdZM60= Received: by 10.65.183.8 with SMTP id k8mr456711qbp; Mon, 27 Feb 2006 05:17:35 -0800 (PST) Received: by 10.65.216.18 with HTTP; Mon, 27 Feb 2006 05:17:35 -0800 (PST) Message-ID: Date: Mon, 27 Feb 2006 14:17:35 +0100 From: "Claus Guttesen" To: "Javier Somoza" Subject: Re: Setting the shared buffers Cc: pgsql-performance@postgresql.org In-Reply-To: <1141044216.1556.54.camel@pndsoft> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_1305_376649.1141046255574" References: <1141044216.1556.54.camel@pndsoft> X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.001 required=5 tests=[HTML_MESSAGE=0.001] X-Spam-Score: 0.001 X-Spam-Level: X-Archive-Number: 200602/414 X-Sequence-Number: 17400 ------=_Part_1305_376649.1141046255574 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline > > How should i set this configuration? Depending on the memory? > And then is it necessary to perform a benchmarking test? I've set it to 'shared_buffers =3D 12288' with 8 GB RAM on postgresql 7.4.9= , FreeBSD 6.0. There is no exact size, depends on type of workload, server-OS etc. Adjust it up and down and see if your performance changes. regards Claus ------=_Part_1305_376649.1141046255574 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
  =           How should i set thi= s configuration? Depending on the memory?
            And then= is it necessary to perform a benchmarking test?

I've = set it to 'shared_buffers =3D 12288' with 8 GB RAM on postgresql 7.4.9, Fre= eBSD 6.0. There is no exact size, depends on type of workload, server-OS et= c. Adjust it up and down and see if your performance changes.

regards
Claus

------=_Part_1305_376649.1141046255574--