Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753179AbZLRNG4 (ORCPT ); Fri, 18 Dec 2009 08:06:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751050AbZLRNGz (ORCPT ); Fri, 18 Dec 2009 08:06:55 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:47986 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751165AbZLRNGx (ORCPT ); Fri, 18 Dec 2009 08:06:53 -0500 Date: Fri, 18 Dec 2009 14:06:42 +0100 From: Ingo Molnar To: Mike Galbraith Cc: Jason Garrett-Glaser , Kasper Sandberg , Peter Zijlstra , LKML Mailinglist , Linus Torvalds Subject: Re: x264 benchmarks BFS vs CFS Message-ID: <20091218130642.GA17033@elte.hu> References: <1261042383.14314.0.camel@localhost> <28f2fcbc0912170242r6d93dfb1j337558a829e21a75@mail.gmail.com> <20091217105316.GB26010@elte.hu> <1261047618.14314.6.camel@localhost> <28f2fcbc0912171718x271520b4k5da3376b5182d88a@mail.gmail.com> <20091218052344.GD417@elte.hu> <1261121405.30469.8.camel@marge.simson.net> <28f2fcbc0912180211we599252v39cb94d113537eb5@mail.gmail.com> <1261140546.15591.5.camel@marge.simson.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1261140546.15591.5.camel@marge.simson.net> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 849 Lines: 24 * Mike Galbraith wrote: > > I'm personally curious as to what kind of scheduler issues this results > > in--I haven't done any BFS vs CFS tests with this option enabled yet. > > I'll look for x264 source, and patch/piddle. btw., would be nice to look at it via tools/perf/ as well: perf stat --repeat 3 ... to see the basic hardware utilization (cycles/cache-misses, branch execution rate, instructions, etc.) and the basic parallelism metrics, at a glance. i suspect "perf stat -e L1-icache-loads -e L1-icache-load-misses" would give us an even more detailed picture. 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/