From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756875AbZHZLzh (ORCPT ); Wed, 26 Aug 2009 07:55:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756562AbZHZLzh (ORCPT ); Wed, 26 Aug 2009 07:55:37 -0400 Received: from yohan.staff.proxad.net ([213.228.1.71]:53915 "EHLO yohan.staff.proxad.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756464AbZHZLzg (ORCPT ); Wed, 26 Aug 2009 07:55:36 -0400 Message-ID: <4A9522B6.7060607@yohan.staff.proxad.net> Date: Wed, 26 Aug 2009 13:55:34 +0200 From: Yohan User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) MIME-Version: 1.0 To: Mel Gorman CC: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: VM issue causing high CPU loads References: <4A92A25A.4050608@yohan.staff.proxad.net> <20090824162155.ce323f08.akpm@linux-foundation.org> <20090826110809.GG10955@csn.ul.ie> In-Reply-To: <20090826110809.GG10955@csn.ul.ie> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Mel Gorman wrote: > On Mon, Aug 24, 2009 at 04:21:55PM -0700, Andrew Morton wrote: > >> On Mon, 24 Aug 2009 16:23:22 +0200 >> Yohan wrote: >> >>> Hi, >>> >>> Is someone have an idea for that : >>> >>> http://bugzilla.kernel.org/show_bug.cgi?id=14024 >>> >> Please generate a kernel profile to work out where all the CPU tie is >> being spent. Documentation/basic_profiling.txt is a starting point. >> > In the absense of a profile, here is a total stab in the dark. Is this a > NUMA machine? This is a Intel(R) Xeon(R) CPU E5520 on Dell R610 > If so, is /proc/sys/vm/zone_reclaim_mode set to 1 and does > setting it to 0 help? > The value is already 0... Thanks