Received: from localhost (maia-2.hub.org [200.46.204.187]) by postgresql.org (Postfix) with ESMTP id 048D69FB4D5 for ; Mon, 21 May 2007 17:45:39 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.187]) (amavisd-maia, port 10024) with ESMTP id 37832-02 for ; Mon, 21 May 2007 17:45:25 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from h07.llord.com (unknown [195.140.142.194]) by postgresql.org (Postfix) with ESMTP id 668CC9FB467 for ; Mon, 21 May 2007 17:45:34 -0300 (ADT) Received: from par69-8-88-161-102-87.fbx.proxad.net ([88.161.102.87] helo=apollo13) by h07.llord.com with esmtpa (Exim 4.63) (envelope-from ) id 1HqEl1-0007LZ-0t; Mon, 21 May 2007 22:45:31 +0200 Date: Mon, 21 May 2007 22:48:04 +0200 To: "Merlin Moncure" , "Tarhon-Onu Victor" Subject: Re: 500 requests per second From: PFC Cc: pgsql-performance@postgresql.org Content-Type: text/plain; format=flowed; delsp=yes; charset=utf-8 MIME-Version: 1.0 References: Content-Transfer-Encoding: 7bit Message-ID: In-Reply-To: User-Agent: Opera Mail/9.10 (Linux) X-PopBeforeSMTPSenders: junk@peufeu.com, lists@peufeu.com, peufeu@peufeu.com, pfcaillaud@peufeu.com X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - h07.llord.com X-AntiAbuse: Original Domain - postgresql.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - peufeu.com X-Source: X-Source-Args: X-Source-Dir: X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=1.966 tagged_above=0 required=5 tests=AWL=-0.069, BAYES_20=-0.74, RCVD_IN_NJABL_SPAM=2.775 X-Spam-Level: * X-Archive-Number: 200705/400 X-Sequence-Number: 24790 >> I'm looking for a database+hardware solution which should be >> able to handle up to 500 requests per second. What proportion of reads and writes in those 500 tps ? (If you have 450 selects and 50 inserts/update transactions, your hardware requirements will be different than those for the reverse proportion) What is the estimated size of your data and hot working set ?