Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758663AbXETQop (ORCPT ); Sun, 20 May 2007 12:44:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758867AbXETQoh (ORCPT ); Sun, 20 May 2007 12:44:37 -0400 Received: from ug-out-1314.google.com ([66.249.92.173]:27238 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758315AbXETQoh (ORCPT ); Sun, 20 May 2007 12:44:37 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=BcSQnND6xdgojV8NBRVLt3MOkD+DPSQuV8TIib/9aFiU3+ZGNVlg1yE5dwG9wR4+wk4C3qtD/yaDZl9tC7DZSr2w70FzkBStmUY4tRtzavc5YDi/9HPFL3U4ffoWpRl8IbXWZ69Q8p2Oaex1cv2oztuxwfnCYXcP/w+jUdRTZSg= Message-ID: <2c0942db0705200944r19a37bd8pd7c220903084e4d3@mail.gmail.com> Date: Sun, 20 May 2007 09:44:35 -0700 From: "Ray Lee" To: "Miguel Figueiredo" Subject: Re: Sched - graphic smoothness under load - cfs-v13 sd-0.48 Cc: "Bill Davidsen" , "Linux Kernel M/L" In-Reply-To: <4650774F.9040208@debianpt.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <464F57DD.2000309@tmr.com> <4650774F.9040208@debianpt.org> X-Google-Sender-Auth: 0390d3a9836eaf90 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2012 Lines: 43 On 5/20/07, Miguel Figueiredo wrote: > As I tryied myself kernels 2.6.21, 2.6.21-cfs-v13, and 2.6.21-ck2 on the > same machine i found *very* odd those numbers you posted, so i tested > myself those kernels to see the numbers I get instead of talking about > the usage of kernel xpto feels like. > > I did run glxgears with kernels 2.6.21, 2.6.21-cfs-v13 and 2.6.21-ck2 > inside Debian's GNOME environment. The hardware is an AMD Sempron64 3.0 > GHz, 1 GB RAM, Nvidia 6800XT. > Average and standard deviation from the gathered data: > > * 2.6.21: average = 11251.1; stdev = 0.172 > * 2.6.21-cfs-v13: average = 11242.8; stdev = 0.033 > * 2.6.21-ck2: average = 11257.8; stdev = 0.067 > > Keep in mind those numbers don't mean anything we all know glxgears is > not a benchmark, their purpose is only to be used as comparison under > the same conditions. Uhm, then why are you trying to use them to compare against Bill's numbers? You two have completely different hardware setups, and this is a test that is dependent upon hardware. Stated differently, this is a worthless comparison between your results and his as you are changing multiple variables at the same time. (At minimum: the scheduler, cpu, and video card.) > One odd thing i noticed, with 2.6.21-cfs-v13 the gnome's time applet in > the bar skipped some minutes (e.g. 16:23 -> 16:25) several times. > > The data is available on: > http://www.debianPT.org/~elmig/pool/kernel/20070520/ > > > How did you get your data? I am affraid your data it's wrong, there's no > such big difference between the schedulers... It doesn't look like you were running his glitch1 script which starts several in glxgears parallel. Were you, or were you just running one? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/