Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758538AbXI3PoO (ORCPT ); Sun, 30 Sep 2007 11:44:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758224AbXI3Pn6 (ORCPT ); Sun, 30 Sep 2007 11:43:58 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:40851 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756527AbXI3Pn6 (ORCPT ); Sun, 30 Sep 2007 11:43:58 -0400 Date: Sun, 30 Sep 2007 17:43:54 +0200 From: Ingo Molnar To: Matthew Cc: linux-kernel@vger.kernel.org Subject: Re: [patch/backport] CFS scheduler, -v22, for v2.6.23-rc8, v2.6.22.8, v2.6.21.7, v2.6.20.20 Message-ID: <20070930154354.GD24077@elte.hu> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.1.7-deb -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1911 Lines: 44 * Matthew wrote: > both cpus have a continous load of ~ 70% right now so I'll be starting > up 9 instances of glxgears, below are some output & details of my > system (cpu frequency switching is disabled since it doesn't work > right now with the current bios version) > > short summary: unfortunately after starting glxgears everything > stuttered a lot, don't know if it's expactable during that heavy load > - just wanted to let you know; after having closed each instance of > glxgears, everything was fine again ... > cpu#0, 2404.249 MHz > cpu#1, 2404.249 MHz > result: most times only 2-3 of the glxgears-windows were running, the > rest was stuttering / halting (no motion) mouse movement was pretty > discountinous, keyboard input was also delayed how does it behave without the cfs patch applied? Does it work better under v20.5? The best debug output for me to look at would be to download these two scripts: http://people.redhat.com/mingo/cfs-scheduler/tools/cfs-debug-info.sh http://people.redhat.com/mingo/cfs-scheduler/tools/cfs-debug-info-clear.sh first run cfs-debug-info-clear.sh, then use the system for a few minutes and make sure apps are behaving in a 'stutter-free' way. Then run cfs-debug-info.sh (still no glxgears running) - it will produce a "no load" debug info file. Then start the 9x glxgears instances, reproduce the "stuttering" behavior in the apps, and run cfs-debug-info.sh - this will produce a second "under load" output file. Please send me both output files. also, what's the output of "glxgears -info" - does it render on real 3D hardware, or uses the sw-mesa fallback? Ingo - 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/