Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754630AbXIBTWT (ORCPT ); Sun, 2 Sep 2007 15:22:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751530AbXIBTWJ (ORCPT ); Sun, 2 Sep 2007 15:22:09 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:51118 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750874AbXIBTWI (ORCPT ); Sun, 2 Sep 2007 15:22:08 -0400 Date: Sun, 2 Sep 2007 21:21:52 +0200 From: Ingo Molnar To: Roman Zippel Cc: Daniel Walker , linux-kernel@vger.kernel.org, peterz@infradead.org Subject: Re: [ANNOUNCE/RFC] Really Fair Scheduler Message-ID: <20070902192152.GA29757@elte.hu> References: <1188694367.11196.42.camel@dhcp193.mvista.com> <20070902072029.GA24427@elte.hu> <20070902152900.GA23642@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: -0.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-0.5 required=5.9 tests=BAYES_20 autolearn=no SpamAssassin version=3.0.3 -0.5 BAYES_20 BODY: Bayesian spam probability is 5 to 20% [score: 0.1861] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1186 Lines: 28 * Roman Zippel wrote: > > > > so unmodified CFS is 4.6% faster on this box than with Roman's > > > > patch and it's also more consistent/stable (10 times lower > > > > fluctuations). > > > > > > Was SCHED_DEBUG enabled or disabled for these runs? > > > > debugging disabled of course. (your patch has a self-validity > > checking function [verify_queue()] that is called on SCHED_DEBUG=y, > > it would have been unfair to test your patch with that included.) > > I'll look into it next week. thanks. FYI, there's plenty of time - i'll be at the KS next week so i'll be quite unresponsive to emails. Would be nice if you could take a quick look at the trivial patch i posted today though. How close is it to your algorithm, have i missed any important details? (not counting nice levels and rounding, it's just a quick & dirty prototype to show the first layer of the core math and nothing more.) 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/