From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 24 May 2002 11:53:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 24 May 2002 11:53:20 -0400 Received: from e31.co.us.ibm.com ([32.97.110.129]:13509 "EHLO e31.co.us.ibm.com") by vger.kernel.org with ESMTP id ; Fri, 24 May 2002 11:53:18 -0400 Date: Fri, 24 May 2002 08:53:38 -0700 From: "Martin J. Bligh" To: Alan Cox , Roy Sigurd Karlsbakk cc: linux-kernel@vger.kernel.org Subject: Re: [BUG] 2.4 VM sucks. Again Message-ID: <421830000.1022255618@flay> In-Reply-To: X-Mailer: Mulberry/2.1.2 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >> > How much RAM do you have, and what does /proc/meminfo >> > and /proc/slabinfo say just before the explosion point? >> >> I have 1 gig - highmem (not enabled) - 900 megs. >> for what I can see, kernel can't reclaim buffers fast enough. >> ut looks better on -aa. >> > > What sort of setup. I can't duplicate the problem here ? I'm not sure exactly what Roy was doing, but we were taking a machine with 16Gb of RAM, and reading files into the page cache - I think we built up 8 million buffer_heads according to slabinfo ... on a P4 they're 128 bytes each, on a P3 96 bytes. M.