From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263700AbTKXT4i (ORCPT ); Mon, 24 Nov 2003 14:56:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263823AbTKXT4h (ORCPT ); Mon, 24 Nov 2003 14:56:37 -0500 Received: from fw.osdl.org ([65.172.181.6]:17315 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S263700AbTKXT4f (ORCPT ); Mon, 24 Nov 2003 14:56:35 -0500 Date: Mon, 24 Nov 2003 11:57:07 -0800 From: Andrew Morton To: Karl Pitrich Cc: linux-kernel@vger.kernel.org Subject: Re: LSI53C1030 (Fustion MPT) performance Message-Id: <20031124115707.38eb0333.akpm@osdl.org> In-Reply-To: <1069668564.2372.127.camel@warp.fabafsc.fabagl.fabasoft.com> References: <1069668564.2372.127.camel@warp.fabafsc.fabagl.fabasoft.com> X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i586-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 Karl Pitrich wrote: > > hi, > > i got a new ibm intellistation z pro dual xeon (6221-49G) with on board > Fusion MPT chipset (LSI53C1030) and fast U160 disks. > > 2.4.20-8 (redhat) and 2.6.0-test9-vanilla > (each customer compiled minimal kernels) > both yield very poor disk performance. > > i didn't do specific benkchmarking, but mv'ing a 3GB $HOME to another > partition takes at least 4x the time as on my old P4 workstation with > IDE drive. > > is poor performance with this controller a known problem? > could that have to do something with smp? > > in 2.6.0, the driver's cvs-versions seem to match the ones in the > sources offered by LSI for download. > lkml-archives and google weren't all too helpful. > The 2.6 driver runs nicely in single-disk mode but has been reported to run like a dog in RAID mode. I do not know if the 2.4 driver has the same problem.