Received: from localhost (maia-4.hub.org [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 6B5619FB45E for ; Sat, 5 May 2007 06:31:16 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 73928-04 for ; Sat, 5 May 2007 06:31:07 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from svr4.postgresql.org (svr4.postgresql.org [66.98.251.159]) by postgresql.org (Postfix) with ESMTP id 343869FB452 for ; Sat, 5 May 2007 06:31:07 -0300 (ADT) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.3 Received: from cassarossa.samfundet.no (cassarossa.samfundet.no [129.241.93.19]) by svr4.postgresql.org (Postfix) with ESMTP id D308A5AF027 for ; Sat, 5 May 2007 09:31:05 +0000 (GMT) Received: from trofast.ipv6.sesse.net ([2001:700:300:1803:20e:cff:fe36:a766] helo=trofast.sesse.net) by cassarossa.samfundet.no with esmtp (Exim 4.50) id 1HkGbS-00051M-On for pgsql-performance@postgresql.org; Sat, 05 May 2007 11:30:59 +0200 Received: from sesse by trofast.sesse.net with local (Exim 3.36 #1 (Debian)) id 1HkGbT-0003DP-00 for ; Sat, 05 May 2007 11:30:59 +0200 Date: Sat, 5 May 2007 11:30:59 +0200 From: "Steinar H. Gunderson" To: pgsql-performance@postgresql.org Subject: Re: Feature Request --- was: PostgreSQL Performance Tuning Message-ID: <20070505093059.GD12209@uio.no> Mail-Followup-To: pgsql-performance@postgresql.org References: <200705010923.47951.josh@agliodbs.com> <200705031221.56226.josh@agliodbs.com> <20070504124536.GJ2422@mathom.us> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Operating-System: Linux 2.6.20.4 on a x86_64 X-Message-Flag: Outlook? --> http://www.mozilla.org/products/thunderbird/ User-Agent: Mutt/1.5.13 (2006-08-11) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0.102 tagged_above=0 required=5 tests=AWL=0.101, BAYES_50=0.001 X-Spam-Level: X-Archive-Number: 200705/55 X-Sequence-Number: 24445 On Fri, May 04, 2007 at 09:07:53PM -0400, Greg Smith wrote: > As if I don't know what the bogo stands for, ha! I brought that up > because someone suggested testing CPU speed using some sort of idle loop. > That's exactly what bogomips does. Just for reference (I'm sure you know, but others might not): BogoMIPS are measured using a busy loop because that's precisely the number the kernel is interested in -- it's used to know for how long to loop when doing small delays in the kernel (say, "sleep 20 microseconds"), which is done using a busy loop. /* Steinar */ -- Homepage: http://www.sesse.net/