From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264057AbTJ1RcH (ORCPT ); Tue, 28 Oct 2003 12:32:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264058AbTJ1RcH (ORCPT ); Tue, 28 Oct 2003 12:32:07 -0500 Received: from fw.osdl.org ([65.172.181.6]:43909 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S264057AbTJ1RcC (ORCPT ); Tue, 28 Oct 2003 12:32:02 -0500 Date: Tue, 28 Oct 2003 09:26:12 -0800 From: cliff white To: Nick Piggin Cc: mhf@linuxmail.org, linux-kernel@vger.kernel.org Subject: Re: 2.6.0-test8/test9 io scheduler needs tuning? Message-Id: <20031028092612.68d1c80d.cliffw@osdl.org> In-Reply-To: <3F9DAF2C.8010308@cyberone.com.au> References: <200310261201.14719.mhf@linuxmail.org> <20031027145531.2eb01017.cliffw@osdl.org> <3F9DAF2C.8010308@cyberone.com.au> Organization: OSDL X-Mailer: Sylpheed version 0.9.6 (GTK+ 1.2.9; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 28 Oct 2003 10:50:04 +1100 Nick Piggin wrote: > > > cliff white wrote: > > >On Tue, 28 Oct 2003 05:52:45 +0800 > >Michael Frank wrote: > > > > > >>To my surprise 2.6 - which used to do better then 2.4 - does no longer > >>handle these test that well. > >STP id Kernel Name MaxJPM Change Options > >281669 linux-2.6.0-test8 7014.42 0.0 > >281671 linux-2.6.0-test8 8294.94 +18.26% elevator=deadline > > > >The -mm kernels don't show this big delta. We also do not see this delta on > >smaller machines > > > > I'm working with Randy to fix this. Attached is what I have so far. See how > you go with it. So far, looks quite good. ( i know 2.4.18 is wierd for some, but they were hot off the stp, so i used 'em ) 4-cpu STP id Kernel Name MaxJPM Change Options 282391 linux-2.4.18 5250.23 0.00 282413 Nick's patch 5484.95 4.27 elevator=deadline 282413 Nick's patch 5416.51 3.06 282395 linux-2.4.18 6581.17 0.0 282415 Nick's patch 8293.95 20.6 282415 Nick's patch 8484.95 22.43 elevator=deadline And, the graph is nice and flat! http://khack.osdl.org/stp/282416/results/jpm.png Full results: http://developer.osdl.org/cliffw/reaim/index.html Any test detail: http://khack.osdl.org/stp/ cliffw > -- The church is near, but the road is icy. The bar is far, but i will walk carefully. - Russian proverb