Received: from localhost (unknown [200.46.204.184]) by postgresql.org (Postfix) with ESMTP id 615762E2D48 for ; Tue, 4 Mar 2008 18:44:47 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.184]) (amavisd-maia, port 10024) with ESMTP id 19089-02-2 for ; Tue, 4 Mar 2008 18:44:39 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from 42.mail-out.ovh.net (42.mail-out.ovh.net [213.251.189.42]) by postgresql.org (Postfix) with SMTP id 36C522E2974 for ; Tue, 4 Mar 2008 18:44:44 -0400 (AST) Received: (qmail 4433 invoked by uid 503); 4 Mar 2008 22:44:45 -0000 Received: from gw2.ovh.net (HELO mail186.ha.ovh.net) (213.251.189.202) by 42.mail-out.ovh.net with SMTP; 4 Mar 2008 22:44:45 -0000 Received: from b0.ovh.net (HELO queue-out) (213.186.33.50) by b0.ovh.net with SMTP; 4 Mar 2008 22:44:19 -0000 Received: from ita73-2-82-246-12-243.fbx.proxad.net (HELO localhost.localdomain) (dforums@vieonet.com@82.246.12.243) by ns0.ovh.net with SMTP; 4 Mar 2008 22:44:18 -0000 Message-ID: <47CDE4EA.8020206@vieonet.com> Date: Wed, 05 Mar 2008 00:10:18 +0000 From: dforums User-Agent: Thunderbird 2.0.0.12 (X11/20080226) MIME-Version: 1.0 To: Alan Hodgson CC: pgsql-performance@postgresql.org Subject: Re: Optimisation help References: <47CDCB62.9070302@vieonet.com> <200803041303.58321@hal.medialogik.com> In-Reply-To: <200803041303.58321@hal.medialogik.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Ovh-Remote: 82.246.12.243 (ita73-2-82-246-12-243.fbx.proxad.net) X-Ovh-Local: 213.186.33.20 (ns0.ovh.net) X-Spam-Check: DONE|H 0.5/N X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.527 tagged_above=0 required=5 tests=AWL=0.527 X-Spam-Level: X-Archive-Number: 200803/60 X-Sequence-Number: 29014 tX for your reply, I do not have more information on disk speed. I'll get it latter. But My most fear is that for now the database is only of 10 Go. But I will have to increase it 10 times during the next six month I'm afraid that these problems will increase. Regards David Alan Hodgson a écrit : > On Tuesday 04 March 2008, dforums wrote: >> Hello >> >> >> We hace a Quad Xeon server, with 8GO of ram, sata II 750Go >> >> >> I suppose the main problem is from database server settings. > > No, the problem is your hard drive is too slow. One drive can only do maybe > 150 seeks per second. > > Oh, and updates in PostgreSQL are expensive. But mostly I'd say it's your > drive. >