Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758021AbXKTF63 (ORCPT ); Tue, 20 Nov 2007 00:58:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753492AbXKTF6V (ORCPT ); Tue, 20 Nov 2007 00:58:21 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:51657 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750702AbXKTF6U (ORCPT ); Tue, 20 Nov 2007 00:58:20 -0500 Date: Tue, 20 Nov 2007 06:57:55 +0100 From: Ingo Molnar To: Micah Dowty Cc: Dmitry Adamushko , Christoph Lameter , Kyle Moffett , Cyrus Massoumi , LKML Kernel , Andrew Morton , Mike Galbraith , Paul Menage , Peter Williams Subject: Re: High priority tasks break SMP balancer? Message-ID: <20071120055755.GE20436@elte.hu> References: <20071116024408.GA20322@vmware.com> <20071116060700.GD16273@elte.hu> <20071116221404.GC31527@vmware.com> <20071117010352.GA13666@vmware.com> <20071119185116.GA28173@vmware.com> <20071119230516.GC4736@vmware.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071119230516.GC4736@vmware.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean 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=3.1.7-deb -1.5 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: 961 Lines: 27 * Micah Dowty wrote: > > this one is being triggered whenever a cpu becomes idle (schedule() > > --> idle_balance() --> load_balance_newidle()). > > > > (this flag is a bit #1 == 2) > > > > cat /proc/sys/kernel/sched_domain/cpu0/domain0/flags > > Hmm. I don't have this file on my system: > > root@micah-64:/proc/sys/kernel/sched_domain/cpu0/domain0# ls > busy_factor busy_idx forkexec_idx idle_idx imbalance_pct max_interval min_interval newidle_idx wake_idx > root@micah-64:/proc/sys/kernel/sched_domain/cpu0/domain0# uname -a > Linux micah-64 2.6.23.1 #1 SMP Fri Nov 2 12:25:47 PDT 2007 x86_64 GNU/Linux > > Is there a config option I'm missing? yes, CONFIG_SCHED_DEBUG. 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/