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 858049DC98C for ; Mon, 30 Jan 2006 07:00:56 -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 58708-03 for ; Mon, 30 Jan 2006 07:00:58 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey- Received: from vms044pub.verizon.net (vms044pub.verizon.net [206.46.252.44]) by postgresql.org (Postfix) with ESMTP id 2ADDB9DC9E1 for ; Mon, 30 Jan 2006 07:00:53 -0400 (AST) Received: from osgiliath.mathom.us ([70.108.47.21]) by vms044.mailsrvcs.net (Sun Java System Messaging Server 6.2-4.02 (built Sep 9 2005)) with ESMTPA id <0ITW000ZMJXGX450@vms044.mailsrvcs.net> for pgsql-performance@postgresql.org; Mon, 30 Jan 2006 05:00:53 -0600 (CST) Received: from localhost (localhost [127.0.0.1]) by osgiliath.mathom.us (Postfix) with ESMTP id C77216EA7D for ; Mon, 30 Jan 2006 06:00:50 -0500 (EST) Received: from osgiliath.mathom.us ([127.0.0.1]) by localhost (osgiliath.home.mathom.us [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 17253-08-2 for ; Mon, 30 Jan 2006 06:00:49 -0500 (EST) Received: by osgiliath.mathom.us (Postfix, from userid 1000) id 7857D6EA13; Mon, 30 Jan 2006 06:00:49 -0500 (EST) Date: Mon, 30 Jan 2006 06:00:49 -0500 From: Michael Stone Subject: Re: Where is my bottleneck? In-reply-to: <43D67496.2020203@androme.es> To: pgsql-performance@postgresql.org Mail-followup-to: pgsql-performance@postgresql.org Message-id: <20060130110047.GB9976@mathom.us> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii; format=flowed Content-disposition: inline X-Pgp-Fingerprint: 53 FF 38 00 E7 DD 0A 9C 84 52 84 C5 EE DF 7C 88 X-Virus-Scanned: Debian amavisd-new at mathom.us References: <43D67496.2020203@androme.es> User-Agent: Mutt/1.5.11 X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.109 required=5 tests=[AWL=0.109] X-Spam-Score: 0.109 X-Spam-Level: X-Archive-Number: 200601/475 X-Sequence-Number: 16953 On Tue, Jan 24, 2006 at 07:40:22PM +0100, Arnau Rebassa Villalonga wrote: > I have a performance problem and I don't know where is my bottleneck. [snip] > Most of the time the idle value is even higher than 60%. It's generally a fairly safe bet that if you are running slow and your cpu is idle, your i/o isn't fast enough. Mike Stone