Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756774AbXISInE (ORCPT ); Wed, 19 Sep 2007 04:43:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754256AbXISImz (ORCPT ); Wed, 19 Sep 2007 04:42:55 -0400 Received: from mail.gmx.net ([213.165.64.20]:58449 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754213AbXISImy (ORCPT ); Wed, 19 Sep 2007 04:42:54 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX194ctEN8Zt4liQ067q6jd0FXDQFBXQKeDrueFRHCT 2UeQwAxzXtLKJf Subject: Re: [git] CFS-devel, group scheduler, fixes From: Mike Galbraith To: Tong Li Cc: Ingo Molnar , dimm , linux-kernel@vger.kernel.org, Srivatsa Vaddagiri , Peter Zijlstra In-Reply-To: <1190188261.9185.21.camel@Homer.simpson.net> References: <1190144190.5204.24.camel@earth> <20070918201622.GA1632@elte.hu> <1190183324.9737.7.camel@Homer.simpson.net> <1190188261.9185.21.camel@Homer.simpson.net> Content-Type: text/plain Date: Wed, 19 Sep 2007 10:42:48 +0200 Message-Id: <1190191368.8687.5.camel@Homer.simpson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.8.2 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1350 Lines: 33 On Wed, 2007-09-19 at 09:51 +0200, Mike Galbraith wrote: > The scenario which was previously cured was this: > taskset -c 1 nice -n 0 ./massive_intr 2 9999 > taskset -c 1 nice -n 5 ./massive_intr 2 9999 > click link > (http://pages.cs.wisc.edu/~shubu/talks/cachescrub-prdc2004.ppt) to bring > up browser and OpenOffice Impress. > > Xorg (at nice -5 + above scenario) latency samples: > se.wait_max : 57985337 > se.wait_max : 25163510 > se.wait_max : 37005538 > se.wait_max : 66986511 > se.wait_max : 53990868 > se.wait_max : 80976761 > se.wait_max : 96967501 > se.wait_max : 80989254 > se.wait_max : 53990897 > se.wait_max : 181963905 > se.wait_max : 85985181 To be doubly sure of the effect on the pinned tasks + migrating Xorg scenario, I just ran the above test 10 times with virgin devel source. Maximum Xorg latency was 20ms. -Mike - 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/