Received: from localhost (unknown [200.46.208.211]) by mail.postgresql.org (Postfix) with ESMTP id 619FB633418 for ; Mon, 11 Jan 2010 13:20:18 -0400 (AST) Received: from mail.postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.208.211]) (amavisd-maia, port 10024) with ESMTP id 40219-07 for ; Mon, 11 Jan 2010 17:20:06 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by mail.postgresql.org (Postfix) with ESMTP id B0C87632EA0 for ; Mon, 11 Jan 2010 13:20:07 -0400 (AST) Received: from list by lo.gmane.org with local (Exim 4.50) id 1NUNvx-000869-60 for pgsql-performance@postgresql.org; Mon, 11 Jan 2010 18:20:05 +0100 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 11 Jan 2010 18:20:05 +0100 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 11 Jan 2010 18:20:05 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: pgsql-performance@postgresql.org From: Ivan Voras Subject: Re: performance config help Date: Mon, 11 Jan 2010 18:19:40 +0100 Lines: 9 Message-ID: References: <61039b861001110544o2c352763q13dcf9d78a156714@mail.gmail.com> <61039b861001110842g15bb1f26jc50b6e6762e01427@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 2.0.0.23 (X11/20091210) In-Reply-To: X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-2.594 tagged_above=-10 required=5 tests=AWL=0.005, BAYES_00=-2.599 X-Spam-Level: X-Archive-Number: 201001/195 X-Sequence-Number: 37075 Ivan Voras wrote: > Yes, but you are issuing 133 write operations per seconds per drive(s) - > this is nearly the limit of what you can get with 15k RPM drives > (actually, the limit should be somewhere around 200..250 IOPS but 133 > isn't that far). I saw in your other post you have fsync turned off so ignore this, it's not an IO problem in your case.