From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757866AbXHJFuK (ORCPT ); Fri, 10 Aug 2007 01:50:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752724AbXHJFtz (ORCPT ); Fri, 10 Aug 2007 01:49:55 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:41596 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751813AbXHJFty (ORCPT ); Fri, 10 Aug 2007 01:49:54 -0400 Date: Fri, 10 Aug 2007 07:49:48 +0200 From: Ingo Molnar To: Roman Zippel Cc: Linus Torvalds , Andi Kleen , Mike Galbraith , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: CFS review Message-ID: <20070810054948.GA5908@elte.hu> References: <20070801071230.GA16375@elte.hu> <20070801150742.GA23670@elte.hu> <20070801175004.GA17936@elte.hu> <20070801190556.GA1199@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.0.3 -1.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Roman Zippel wrote: > > 4544 roman 20 0 1796 520 432 S 32.1 0.4 0:21.08 lt > > 4545 roman 20 0 1796 344 256 R 32.1 0.3 0:21.07 lt > > 4546 roman 20 0 1796 344 256 R 31.7 0.3 0:21.07 lt > > 4547 roman 20 0 1532 272 216 R 3.3 0.2 0:01.94 l > > > > and i'm still wondering how that output was possible. > > I disabled the jiffies logic and the result is still the same, so this > problem isn't related to resolution at all. how did you disable the jiffies logic? Also, could you please send me the cfs-debug-info.sh: http://people.redhat.com/mingo/cfs-scheduler/tools/cfs-debug-info.sh captured _while_ the above workload is running. This is the third time i've asked for that :-) to establish that the basic sched_clock() behavior is sound on that box, could you please also run this tool: http://people.redhat.com/mingo/cfs-scheduler/tools/tsc-dump.c please run it both while the system is idle, and while there's a CPU hog running: while :; do :; done & and send me that output too? (it's 2x 60 lines only) Thanks! Ingo