Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758322AbXEWEMH (ORCPT ); Wed, 23 May 2007 00:12:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754888AbXEWEL4 (ORCPT ); Wed, 23 May 2007 00:11:56 -0400 Received: from holomorphy.com ([66.93.40.71]:57743 "EHLO holomorphy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754538AbXEWEL4 (ORCPT ); Wed, 23 May 2007 00:11:56 -0400 Date: Tue, 22 May 2007 21:06:50 -0700 From: William Lee Irwin III To: Con Kolivas Cc: Bill Davidsen , Miguel Figueiredo , Ray Lee , Linux Kernel M/L Subject: Re: Sched - graphic smoothness under load - cfs-v13 sd-0.48 Message-ID: <20070523040650.GS19966@holomorphy.com> References: <464F57DD.2000309@tmr.com> <46534C31.1060306@debianpt.org> <46538AB8.8030009@tmr.com> <200705241036.45179.kernel@kolivas.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200705241036.45179.kernel@kolivas.org> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1368 Lines: 28 On Wednesday 23 May 2007 10:28, Bill Davidsen wrote: >>> kernel 2.6.21-cfs-v13 2.6.21-ck2 >>> a) 194464 254669 >>> b) 54159 124 >> Everyone seems to like ck2, this makes it look as if the video display >> would be really pretty unusable. While sd-0.48 does show an occasional >> video glitch when watching video under heavy load, it's annoying rather >> than unusable. On Thu, May 24, 2007 at 10:36:44AM +1000, Con Kolivas wrote: > That's because the whole premise of your benchmark relies on a workload that > yield()s itself to the eyeballs on most graphic card combinations when using > glxgears. Your test remains a test of sched_yield in the presence of your > workloads rather than anything else. If people like ck2 it's because in the > real world with real workloads it is better, rather than on a yield() based > benchmark. Repeatedly the reports are that 3d apps and games in normal usage > under -ck are better than mainline and cfs. Maybe people should explicitly hack on sched_yield() for these things and do comparative benchmarking of sched_yield() implementations. -- wli - 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/