Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755384AbZIJK5c (ORCPT ); Thu, 10 Sep 2009 06:57:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753209AbZIJK5c (ORCPT ); Thu, 10 Sep 2009 06:57:32 -0400 Received: from mail.gmx.net ([213.165.64.20]:48273 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753185AbZIJK5b (ORCPT ); Thu, 10 Sep 2009 06:57:31 -0400 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1/ZyH83K/3ZrKLdfOacKq4MgUqyelB8Oz/nnsm5oq fbTq9Ov2spQ4cP Subject: Re: BFS vs. mainline scheduler benchmarks and measurements From: Mike Galbraith To: Jens Axboe Cc: Ingo Molnar , Nikos Chantziaras , Peter Zijlstra , Con Kolivas , linux-kernel@vger.kernel.org In-Reply-To: <20090910102837.GJ18599@kernel.dk> References: <20090909091009.GR18599@kernel.dk> <20090909115429.GY18599@kernel.dk> <20090909122006.GA18599@kernel.dk> <20090909180404.GA11027@elte.hu> <4AA80C1E.2080901@arcor.de> <20090910060824.GF1335@elte.hu> <20090910064059.GA22646@elte.hu> <20090910095457.GD18599@kernel.dk> <20090910100321.GA7922@elte.hu> <20090910101137.GH18599@kernel.dk> <20090910102837.GJ18599@kernel.dk> Content-Type: text/plain Date: Thu, 10 Sep 2009 12:57:31 +0200 Message-Id: <1252580251.18659.10.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-FuHaFi: 0.57 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1196 Lines: 34 On Thu, 2009-09-10 at 12:28 +0200, Jens Axboe wrote: > No difference. Then I tried switching NO_NEW_FAIR_SLEEPERS on, and then > I get: > > Performance counter stats for 'xmodmap .xmodmap-carl': > > 9.009137 task-clock-msecs # 0.447 CPUs > 18 context-switches # 0.002 M/sec > 1 CPU-migrations # 0.000 M/sec > 315 page-faults # 0.035 M/sec > cycles > instructions > cache-references > cache-misses > > 0.020167093 seconds time elapsed > > Woot! Something is very seriously hosed on that box... clock? Can you turn it back on, and do.. while sleep .1; do cat /proc/sched_debug >> foo; done ..on one core, and (quickly;) xmodmap .xmodmap-carl, then send me a few seconds worth (gzipped up) to eyeball? -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/