From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932291AbYDPQ7z (ORCPT ); Wed, 16 Apr 2008 12:59:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752094AbYDPQ7p (ORCPT ); Wed, 16 Apr 2008 12:59:45 -0400 Received: from mx1.redhat.com ([66.187.233.31]:57272 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750911AbYDPQ7o (ORCPT ); Wed, 16 Apr 2008 12:59:44 -0400 Date: Wed, 16 Apr 2008 09:59:38 -0700 From: Pete Zaitcev To: Stephen Hemminger Cc: David Miller , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, zaitcev@redhat.com Subject: Re: X or AF_UNIX and order 3 allocation Message-Id: <20080416095938.66d798e4.zaitcev@redhat.com> In-Reply-To: <20080416085213.1e55bd1e@extreme> References: <20080415211055.882e67fe.zaitcev@redhat.com> <20080415.215144.87148045.davem@davemloft.net> <20080416085213.1e55bd1e@extreme> Organization: Red Hat, Inc. X-Mailer: Sylpheed 2.5.0beta1 (GTK+ 2.12.9; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 16 Apr 2008 08:52:13 -0700, Stephen Hemminger wrote: > > > Not sure if the problem is caused by X or kernel, but this is what > > > > It seems to be the b44 driver doing a large huge order allocation. > > > > That driver only asks for (1536 + 30 + 64) bytes, so I suppose part of > > the problem is that SLAB is using an order 3 allocation to satisfy > > that. > The chip needs memory below 1G for DMA, perhaps low memory is getting > exhausted. The failure corresponds to memory pressure (from yum), but the real issue is the lack of order 3 areas. We're talking a 32KB chunk! Why would anyone need that much? Crazy! Apr 13 18:19:14 niphredil kernel: Xorg: page allocation failure. order:3, mode:0x4020 I blame SLUB. Things like the above never happened with SLAB. -- Pete