From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265910AbUBCH6z (ORCPT ); Tue, 3 Feb 2004 02:58:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265907AbUBCH6z (ORCPT ); Tue, 3 Feb 2004 02:58:55 -0500 Received: from mail-06.iinet.net.au ([203.59.3.38]:34522 "HELO mail.iinet.net.au") by vger.kernel.org with SMTP id S265910AbUBCH6C (ORCPT ); Tue, 3 Feb 2004 02:58:02 -0500 Message-ID: <401F5467.50702@cyberone.com.au> Date: Tue, 03 Feb 2004 18:57:27 +1100 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040122 Debian/1.6-1 X-Accept-Language: en MIME-Version: 1.0 To: Samium Gromoff CC: Andrew Morton , linux-kernel@vger.kernel.org, philip@codematters.co.uk Subject: Re: 2.6.1 slower than 2.4, smp/scsi/sw-raid/reiserfs References: <87smhsy7n4.wl@canopus.ns.zel.ru> <20040202230745.237dd5b6.akpm@osdl.org> <87r7xcy4zy.wl@canopus.ns.zel.ru> In-Reply-To: <87r7xcy4zy.wl@canopus.ns.zel.ru> 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 Samium Gromoff wrote: >At Mon, 2 Feb 2004 23:07:45 -0800, >Andrew Morton wrote: > > >>Samium Gromoff wrote: >> >> >>> >>> >>>>>The machine is a dual P3 450MHz, 512MB, aic7xxx, 2 disk RAID-0 and >>>>> ReiserFS. It's a few years old and has always run Linux, most >>>>> recently 2.4.24. I decided to try 2.6.1 and the performance is >>>>> disappointing. >>>>> >>>>> >>>> >>>>2.6 has a few performance problems under heavy pageout at present. Nick >>>>Piggin has some patches which largely fix it up. >>>> >>>> >>>I`m sorry, but this is misguiding. 2.6 does not have a few performance >>>problems under heavy pageout. >>> >>> >>> >>As you have frequently and somewhat redundantly reminded us. >> >> > >Right. I`m rather emotional about this... > >Kind of hard seeing the all starry and shiny 2.6 going down the toilet on my >little server with 16M RAM. > > > >>Perhaps you could test Nick's patches. They are at >> >> http://www.kerneltrap.org/~npiggin/vm/ >> >>Against 2.6.2-rc2-mm2. First revert vm-rss-limit-enforcement.patch, then >>apply those three. >> >> > >Hmmm, i`d prefer plain 2.6, but i`ll try it anyway. > > > It should go against plain 2.6 with luck.