From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268209AbUHXAwl (ORCPT ); Mon, 23 Aug 2004 20:52:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267792AbUHXAu0 (ORCPT ); Mon, 23 Aug 2004 20:50:26 -0400 Received: from mail-12.iinet.net.au ([203.59.3.44]:52189 "HELO mail.iinet.net.au") by vger.kernel.org with SMTP id S268180AbUHXAlX (ORCPT ); Mon, 23 Aug 2004 20:41:23 -0400 Message-ID: <412A8EAD.3060907@cyberone.com.au> Date: Tue, 24 Aug 2004 10:41:17 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.2) Gecko/20040810 Debian/1.7.2-2 X-Accept-Language: en MIME-Version: 1.0 To: Jesse Barnes CC: "Martin J. Bligh" , Andrew Morton , linux-kernel Subject: Re: Performance of -mm2 and -mm4 References: <336080000.1093280286@[10.10.2.4]> <200408231431.25986.jbarnes@engr.sgi.com> In-Reply-To: <200408231431.25986.jbarnes@engr.sgi.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jesse Barnes wrote: >On Monday, August 23, 2004 9:58 am, Martin J. Bligh wrote: > >>The -mm4 looks more like sched stuff to me (copy_to/from_user, etc), >>but the -mm2 stuff looks like something else. Buggered if I know what. >>-mm3 didn't compile cleanly, so I didn't bother, but I prob can if you >>like. >> > >If you suspect the scheduler, you could try bumping SD_NODES_PER_DOMAIN in >kernel/sched.c to a larger value (e.g. the number of nodes in your system). >That'll make the scheduler balance more aggressively across the whole system. > > Try increasing /proc/sys/kernel/base_timeslice as well.