From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758418AbZFSQu0 (ORCPT ); Fri, 19 Jun 2009 12:50:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753054AbZFSQuT (ORCPT ); Fri, 19 Jun 2009 12:50:19 -0400 Received: from outbound-mail-114.bluehost.com ([69.89.24.4]:52150 "HELO outbound-mail-114.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751978AbZFSQuS (ORCPT ); Fri, 19 Jun 2009 12:50:18 -0400 X-Greylist: delayed 400 seconds by postgrey-1.27 at vger.kernel.org; Fri, 19 Jun 2009 12:50:18 EDT DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=AHtBwe3NPGmy+IbAnT36dOWXCFIHbBhISYyyI0cJqge5Zk4WJMqYO6u7WePCuaAcX6OgyG7epZRQsoFyQ6e7pXIN6emCIurRuzFRkaXCeLNpBoDoZjZrJVYHbwJXdVUG; Date: Fri, 19 Jun 2009 09:43:38 -0700 From: Jesse Barnes To: Wu Fengguang Cc: Peter Zijlstra , Andrew Morton , LKML , Rik van Riel , "linux-mm@kvack.org" , Mel Gorman , Christoph Lameter , KOSAKI Motohiro , "hannes@cmpxchg.org" , "tytso@mit.edu" , "elladan@eskimo.com" , "npiggin@suse.de" , "minchan.kim@gmail.com" , "Wang, Roger" Subject: Re: [PATCH 0/3] make mapped executable pages the first class citizen Message-ID: <20090619094338.4d3c566d@jbarnes-g45> In-Reply-To: <20090619093224.GA30898@localhost> References: <20090516090005.916779788@intel.com> <1242485776.32543.834.camel@laptop> <20090617141135.0d622bfe@jbarnes-g45> <20090618012532.GB19732@localhost> <20090619090011.GA30561@localhost> <1245402289.13761.24606.camel@twins> <20090619093224.GA30898@localhost> X-Mailer: Claws Mail 3.7.1 (GTK+ 2.16.1; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 75.111.28.251 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 19 Jun 2009 17:32:24 +0800 Wu Fengguang wrote: > On Fri, Jun 19, 2009 at 05:04:49PM +0800, Peter Zijlstra wrote: > > On Fri, 2009-06-19 at 17:00 +0800, Wu, Fengguang wrote: > > > [add CC] > > > > > > This OOM case looks like the same bug encountered by David > > > Howells. > > > > > > > Jun 18 07:44:53 jbarnes-g45 kernel: [64377.426766] > > > > Active_anon:290797 active_file:28 inactive_anon:97034 Jun 18 > > > > 07:44:53 jbarnes-g45 kernel: [64377.426767] inactive_file:61 > > > > unevictable:11322 dirty:0 writeback:0 unstable:0 Jun 18 > > > > 07:44:53 jbarnes-g45 kernel: [64377.426768] free:3341 > > > > slab:13776 mapped:5880 pagetables:6851 bounce:0 > > > > > > active/inactive_anon pages take up 4/5 memory. Are you using > > > TMPFS a lot? > > > > I suspect its his GEM thingy ;-) > > Very likely - GEM allocates drm objects from the internal tmpfs, > and libdrm_intel seems to never free drm objects from its cache. Yeah, a good chunk of that is GEM objects. I generally haven't seen OOMs due to excessive GEM allocation though, until recently. We've got some patches queued up to manage the object cache better (actually free pages when we don't need them!), so that should help. -- Jesse Barnes, Intel Open Source Technology Center