Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761453AbXEQUNy (ORCPT ); Thu, 17 May 2007 16:13:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757258AbXEQUNp (ORCPT ); Thu, 17 May 2007 16:13:45 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:34511 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757213AbXEQUNo (ORCPT ); Thu, 17 May 2007 16:13:44 -0400 Date: Thu, 17 May 2007 22:13:38 +0200 From: Ingo Molnar To: =?iso-8859-1?B?VPZy9ms=?= Edvin Cc: mingo@redhat.com, linux-kernel@vger.kernel.org Subject: Re: CFS Scheduler and real-time tasks Message-ID: <20070517201338.GA1713@elte.hu> References: <4354d3270705171214v25bc4834t5e28a08649761e91@mail.gmail.com> <20070517192343.GA24249@elte.hu> <4354d3270705171310x1d7770b2mb086f1fde7cffabd@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <4354d3270705171310x1d7770b2mb086f1fde7cffabd@mail.gmail.com> User-Agent: Mutt/1.4.2.2i X-ELTE-VirusStatus: clean 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=3.0.3 -2.0 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 Content-Length: 1304 Lines: 44 * T?r?k Edvin wrote: > On 5/17/07, Ingo Molnar wrote: > > > >note: you ran it on a dual-core system and the SMP load-balancer needs > >time to gain precision in the non-RT test - so i'd suggest to test it > >much longer than 10 seconds: 300 seconds at least. > > Thanks, running for 300 seconds shows only a 2% error. Even running a > I/O workload while running the massive_intr test keeps the same error. hey, cool! Also try -v13 - it should be even more tighter. > BTW, the system is more 'responsive'. For example starting > applications while running the tests, switching windows, moving > windows is much "smoother" than on default scheduler. yeah :) > [while true;do cp /usr/portage/distfiles/linux-2.6.21.tar.bz2 . && > sync && rm linux-2.6.21.tar.bz2 && sync; done] > > ./massiv_new 9 300 > 020860 00017782 > 020858 00017774 > > RT JOB:020865 00003785 > > 020859 00017048 > 020862 00017387 > 020855 00017494 > 020861 00017245 > 020863 00017492 > 020864 00017122 looks pretty good! 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/