From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261806AbULBXxm (ORCPT ); Thu, 2 Dec 2004 18:53:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261804AbULBXxm (ORCPT ); Thu, 2 Dec 2004 18:53:42 -0500 Received: from hell.sks3.muni.cz ([147.251.210.30]:37562 "EHLO hell.sks3.muni.cz") by vger.kernel.org with ESMTP id S261806AbULBXxH (ORCPT ); Thu, 2 Dec 2004 18:53:07 -0500 Date: Fri, 3 Dec 2004 00:18:37 +0100 From: Lukas Hejtmanek To: Andrew Morton Cc: Stefan Schmidt , marcelo.tosatti@cyclades.com, piggin@cyberone.com.au, linux-kernel@vger.kernel.org, linux-xfs@oss.sgi.com Subject: Re: Kernel 2.6.9 Multiple Page Allocation Failures Message-ID: <20041202231837.GB15185@mail.muni.cz> References: <20041113144743.GL20754@zaphods.net> <20041116093311.GD11482@logos.cnet> <20041116170527.GA3525@mail.muni.cz> <20041121014350.GJ4999@zaphods.net> <20041121024226.GK4999@zaphods.net> <20041202195422.GA20771@mail.muni.cz> <20041202122546.59ff814f.akpm@osdl.org> <20041202210348.GD20771@mail.muni.cz> <20041202223146.GA31508@zaphods.net> <20041202145610.49e27b49.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20041202145610.49e27b49.akpm@osdl.org> X-echelon: NSA, CIA, CI5, MI5, FBI, KGB, BIS, Plutonium, Bin Laden, bomb User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 02, 2004 at 02:56:10PM -0800, Andrew Morton wrote: > It's quite possible that XFS is performing rather too many GFP_ATOMIC > allocations and is depleting the page reserves. Although increasing > /proc/sys/vm/min_free_kbytes should help there. Btw, how the min_free_kbytes works? I have up to 1MB TCP windows. If I'm running out of memory then kswapd should try to free some memory (or bdflush). But on GE I can receive data faster then disk is able to swap or flush buffers. So I should keep min_free big enough to give time to disk to flush/swap data? -- Lukáš Hejtmánek