Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757653AbYACEdK (ORCPT ); Wed, 2 Jan 2008 23:33:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754753AbYACEc4 (ORCPT ); Wed, 2 Jan 2008 23:32:56 -0500 Received: from E23SMTP02.au.ibm.com ([202.81.18.163]:35163 "EHLO e23smtp02.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753744AbYACEcz (ORCPT ); Wed, 2 Jan 2008 23:32:55 -0500 Date: Thu, 3 Jan 2008 09:29:42 +0530 From: Dhaval Giani To: Christoph Lameter Cc: Andrew Morton , htejun@gmail.com, Srivatsa Vaddagiri , Balbir Singh , maneesh@linux.vnet.ibm.com, lkml , linux-mm@kvack.org Subject: Re: 2.6.22-stable causes oomkiller to be invoked Message-ID: <20080103035942.GB26166@linux.vnet.ibm.com> Reply-To: Dhaval Giani References: <20071215104434.GA26325@linux.vnet.ibm.com> <20071217045904.GB31386@linux.vnet.ibm.com> <20071217120720.e078194b.akpm@linux-foundation.org> <20071221044508.GA11996@linux.vnet.ibm.com> <20071228101109.GB5083@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1274 Lines: 30 On Wed, Jan 02, 2008 at 01:54:12PM -0800, Christoph Lameter wrote: > Just traced it again on my system: It is okay for the number of pages on > the quicklist to reach the high count that we see (although the 16 bit > limits are weird. You have around 4GB of memory in the system?). Up to > 1/16th of free memory of a node can be allocated for quicklists (this > allows the effective shutting down and restarting of large amounts of > processes) > > The problem may be that this is run on a HIGHMEM system and the > calculation of allowable pages on the quicklists does not take into > account that highmem pages are not usable for quicklists (not sure about > ZONE_MOVABLE on i386. Maybe we need to take that into account as well?) > > Here is a patch that removes the HIGHMEM portion from the calculation. > Does this change anything: > Yep. This one hits it. I don't see the obvious signs of the oom happening in the 5 mins I have run the script. I will let it run for some more time. Thanks! -- regards, Dhaval -- 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/