Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755349AbXKSXF1 (ORCPT ); Mon, 19 Nov 2007 18:05:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752016AbXKSXFT (ORCPT ); Mon, 19 Nov 2007 18:05:19 -0500 Received: from smtp-outbound-1.vmware.com ([65.113.40.141]:57694 "EHLO smtp-outbound-1.vmware.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752051AbXKSXFS (ORCPT ); Mon, 19 Nov 2007 18:05:18 -0500 Date: Mon, 19 Nov 2007 15:05:16 -0800 From: Micah Dowty To: Dmitry Adamushko Cc: Ingo Molnar , 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: <20071119230516.GC4736@vmware.com> References: <20071116024408.GA20322@vmware.com> <20071116060700.GD16273@elte.hu> <20071116221404.GC31527@vmware.com> <20071117010352.GA13666@vmware.com> <20071119185116.GA28173@vmware.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.16 (2007-06-09) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1110 Lines: 29 On Mon, Nov 19, 2007 at 11:22:06PM +0100, Dmitry Adamushko wrote: > You seem to have a configuration with domains which don't have > SD_BALANCE_NEWIDLE on (CONFIG_NUMA?) as there are no events (all > zeros above) for CPU_NEWLY_IDLE. > > 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? Thanks, --Micah - 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/