From: Solofo.Ramangalahy@bull.net Subject: streaming read and write - test results Date: Tue, 24 Jun 2008 19:18:45 +0200 Message-ID: <18529.11381.230067.316156@frecb006361.adech.frec.bull.fr> References: <4278.1214242602@alphaville.zko.hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: linux-ext4@vger.kernel.org To: nicholas.dokos@hp.com Return-path: Received: from ecfrec.frec.bull.fr ([129.183.4.8]:49597 "EHLO ecfrec.frec.bull.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751981AbYFXRSS (ORCPT ); Tue, 24 Jun 2008 13:18:18 -0400 In-Reply-To: <4278.1214242602@alphaville.zko.hp.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: Nick Dokos writes: > If you have suggestions for > improvements, I'd be very interested in hearing them. [...] > o 8 MSA1000 RAID controllers, each with four back-end SCSI busses, each > bus with 7 300GB 15K disks. Only one bus on each controller is used for > the tests below (the rest are going to be used for larger filesystem > testing). The 7 disks are striped ("horizontally" @ 128KB stripe size) at > the hardware level and exported as a single 2TB LUN (that's the current > hardware LUN size limit). You may want to test one LUN without filesystem, for example with zcav from bonnie++ (http://www.coker.com.au/bonnie++/zcav/). Then the 8 together. This way you have some points of comparison (for ext4 as well as other filesystems) at a lower level. -- solofo