Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753686AbZGHFPc (ORCPT ); Wed, 8 Jul 2009 01:15:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751604AbZGHFPW (ORCPT ); Wed, 8 Jul 2009 01:15:22 -0400 Received: from mail-pz0-f193.google.com ([209.85.222.193]:48409 "EHLO mail-pz0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750941AbZGHFPV (ORCPT ); Wed, 8 Jul 2009 01:15:21 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=M6Q60vd+RYDUMxCFgu7FqORQJC/totndUSFRcsHW1TLIJEmydtbuuiUw3kMmhyUQRQ iuYPL0Ye6IKsW0glAi88IbKpvaDoAetd1GCMj52ZXvbKM1q0VsZLWmJuZ8vPeZ3gUaH8 5vnrtsWyTo6rKjIn3i4d4Uae/vCN6vuKCE+pg= Date: Wed, 8 Jul 2009 13:15:15 +0800 From: Wu Fengguang To: Gene Heskett Cc: Linux Kernel list , "linux-mm@kvack.org" , Minchan Kim , "Rafael J. Wysocki" , Kernel Testers List , David Howells , KOSAKI Motohiro Subject: Re: OOM killer in 2.6.31-rc2 Message-ID: <20090708051515.GA17156@localhost> References: <200907061056.00229.gene.heskett@verizon.net> <200907071057.31152.gene.heskett@verizon.net> <20090708021708.GA10481@localhost> <200907072342.07822.gene.heskett@verizon.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200907072342.07822.gene.heskett@verizon.net> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1490 Lines: 36 On Tue, Jul 07, 2009 at 11:42:07PM -0400, Gene Heskett wrote: > On Tuesday 07 July 2009, Wu Fengguang wrote: > >On Tue, Jul 07, 2009 at 10:57:30PM +0800, Gene Heskett wrote: > >> On Tuesday 07 July 2009, Wu Fengguang wrote: > >> >On Mon, Jul 06, 2009 at 10:56:00AM -0400, Gene Heskett wrote: > >> >> Greetings all; > [...] > >> > > >> >Normal zone is absent in the above lines. > >> > >> Is this a .config issue? > > > >At least CONFIG_HIGHMEM64G is not necessary, could try disabling it. > > I have in a rebuild of this 2.6.30.1 kernel, but ISTR I enabled that because > it was only using 3G of the 4G of ram in this box, an AMD-64 Phenom, 4 cores, > 4G ram. But I haven't rebooted to it yet. Next good excuse. See below... :) I guess you can only use 3G ram because there is a big memory hole. Your HighMem zone spanned 951810 pages, 813013 of which is present. So it's not quite accurate for the OOM message "951810 pages HighMem" to report the spanned pages. Your Normal zone has 221994 present pages, while the OOM message shows "slab:206505", which indicates that the OOM is caused by too much slab pages(they cannot be allocated from HighMem zone). I guess your near 800MB slab cache is somehow under scanned. Thanks, Fengguang -- 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/