Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755368AbZIJKDa (ORCPT ); Thu, 10 Sep 2009 06:03:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755305AbZIJKD3 (ORCPT ); Thu, 10 Sep 2009 06:03:29 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:54844 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753088AbZIJKD3 (ORCPT ); Thu, 10 Sep 2009 06:03:29 -0400 Date: Thu, 10 Sep 2009 12:03:21 +0200 From: Ingo Molnar To: Jens Axboe Cc: Nikos Chantziaras , Mike Galbraith , Peter Zijlstra , Con Kolivas , linux-kernel@vger.kernel.org Subject: Re: BFS vs. mainline scheduler benchmarks and measurements Message-ID: <20090910100321.GA7922@elte.hu> References: <20090909061308.GA28109@elte.hu> <1252486344.28645.18.camel@marge.simson.net> <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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090910095457.GD18599@kernel.dk> User-Agent: Mutt/1.5.18 (2008-05-17) 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=3.2.5 -1.5 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: 1339 Lines: 36 * Jens Axboe wrote: > On Thu, Sep 10 2009, Ingo Molnar wrote: > > > > * Ingo Molnar wrote: > > > > > > However, the interactivity problems still remain. Does that > > > > mean it's not a latency issue? > > > > > > It means that Jens's test-app, which demonstrated and helped us > > > fix the issue for him does not help us fix it for you just yet. > > > > Lemme qualify that by saying that Jens's issues are improved not > > fixed [he has not re-run with latest latt.c yet] but not all things > > are fully fixed yet. For example the xmodmap thing sounds > > interesting - could that be a child-runs-first effect? > > I thought so too, so when -tip failed to boot I pulled the patches > from Mike into 2.6.31. It doesn't change anything for xmodmap, > though. Note, you can access just the pristine scheduler patches by checking out and testing tip:sched/core - no need to pull them out and apply. Your crash looks like clocksource related - that's in a separate topic which you can thus isolate if you use sched/core. Thanks, 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/