From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750912AbVJ2A3N (ORCPT ); Fri, 28 Oct 2005 20:29:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750913AbVJ2A3M (ORCPT ); Fri, 28 Oct 2005 20:29:12 -0400 Received: from anchor-post-33.mail.demon.net ([194.217.242.91]:52997 "EHLO anchor-post-33.mail.demon.net") by vger.kernel.org with ESMTP id S1750912AbVJ2A3L (ORCPT ); Fri, 28 Oct 2005 20:29:11 -0400 Message-ID: <4362C255.30600@oxley.org> Date: Sat, 29 Oct 2005 01:29:09 +0100 From: Felix Oxley User-Agent: Thunderbird 1.4.1 (Macintosh/20051006) MIME-Version: 1.0 To: Felix Oxley CC: "Chen, Kenneth W" , linux-kernel@vger.kernel.org Subject: Re: kernel performance update - 2.6.14 References: <200510282344.j9SNihg27345@unix-os.sc.intel.com> <4362BFFC.9050202@oxley.org> In-Reply-To: <4362BFFC.9050202@oxley.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Felix Oxley wrote: > Chen, Kenneth W wrote: > > Kernel performance data for 2.6.14 (released yesterday) is updated at: > > http://kernel-perf.sourceforge.net > > > > As expected, results are within run variation compares to 2.6.14-rc5. > > No significant deviation found compare to 2.6.14-rc5 > > > > There seems to be some regression here: > > System: 4P Xeon > Test:Result Group 8 > Metric: 64KB_4_fread > Result: +1.9% -15% > Kernel: 2.6.14-rc4 vs 2.6.14-rc4-git4 > > System: 2P Xeon > Test:Result Group 7 > Metric: ODIRECT > Kernel: 2.6.14-rc5 vs 2.6.14-rc5-git3 > Summary: Write has increased whereas Read has decreased by 4-5 % > > Something went horribly wrong with this test between 2.6.13 and 2.6.13-git2 (it has never recovered): System: 4P Itanium Test:Result Group 1 Metric: VolcanoMark Result: -3% -10% Kernel: 2.6.13 vs 2.6.13-git2 Does anybody know the cause of this? regards, Felix