Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759077AbYLDXJb (ORCPT ); Thu, 4 Dec 2008 18:09:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752637AbYLDXJX (ORCPT ); Thu, 4 Dec 2008 18:09:23 -0500 Received: from colobus.isomerica.net ([216.93.242.10]:44496 "EHLO colobus.isomerica.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754013AbYLDXJW (ORCPT ); Thu, 4 Dec 2008 18:09:22 -0500 Message-ID: <4938631F.7010004@isomerica.net> Date: Thu, 04 Dec 2008 18:09:19 -0500 From: =?UTF-8?B?RGFuIE5vw6k=?= Reply-To: dpn@isomerica.net Organization: isomerica.net User-Agent: Thunderbird 2.0.0.17 (Macintosh/20080914) MIME-Version: 1.0 To: Francois Romieu CC: Peter Zijlstra , linux-kernel@vger.kernel.org Subject: Re: Page alloc failures under network/disk IO load References: <20081203222750.391e8890@tuna> <1228378983.5092.7.camel@twins> <1228380128.5092.15.camel@twins> <20081204135443.7c24234a@rockhopper.limebrokerage.com> <20081204224021.GA323@electric-eye.fr.zoreil.com> In-Reply-To: <20081204224021.GA323@electric-eye.fr.zoreil.com> X-Enigmail-Version: 0.95.7 OpenPGP: url=http://isomerica.net/~dpn/gpgkey Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1327 Lines: 35 Francois Romieu wrote: > Dan Noé : > [...] >> I'm a bit confused because on another system (2.6.26.3) I never see >> messages like this despite having the same amount of physical RAM in >> each. The 2.6.26.3 system is also under more active use, and has more >> userspace memory usage. On that system: > > Does this system use the same network card ? Nope, good point :) The system experiencing the allocation failures is using an rtl8169 gigabit NIC (at 1gbps), the 2.6.26.3 system is on a 100M connection with a gigabit Broadcom BCM5721 / tg3. 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01) 04:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express (rev 11) I can see how this could account for different behavior, although presumably both drivers are calling __netdev_alloc_skb. Cheers, Dan -- /--------------- - - - - - - | Dan Noé | http://isomerica.net/~dpn/ -- 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/