Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750700AbWC2DIS (ORCPT ); Tue, 28 Mar 2006 22:08:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750720AbWC2DIS (ORCPT ); Tue, 28 Mar 2006 22:08:18 -0500 Received: from canuck.infradead.org ([205.233.218.70]:26247 "EHLO canuck.infradead.org") by vger.kernel.org with ESMTP id S1750700AbWC2DIR (ORCPT ); Tue, 28 Mar 2006 22:08:17 -0500 Message-ID: <4429F9F9.9000403@torque.net> Date: Tue, 28 Mar 2006 22:07:37 -0500 From: Douglas Gilbert Reply-To: dougg@torque.net User-Agent: Mozilla Thunderbird 1.0.7-1.1.fc4 (X11/20050929) X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Ju, Seokmann" CC: "Ju, Seokmann" , linux-kernel , linux-scsi Subject: Re: I/O performance measurement tools on Linux References: <890BF3111FB9484E9526987D912B261901BC88@NAMAIL3.ad.lsil.com> In-Reply-To: <890BF3111FB9484E9526987D912B261901BC88@NAMAIL3.ad.lsil.com> X-Enigmail-Version: 0.92.0.0 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 Content-Length: 1170 Lines: 35 Ju, Seokmann wrote: > Hi, > > Are there any performance measurement tools available that running on > Linux? > I would like to measure disk I/O performance (file system and raw I/O) > on several kernels. > Please lead me to the place. The sg3_utils package may help with some raw SCSI and SATA disk I/O measurements. sg_dd, sgp_dd and sgm_dd are dd variants that let you tweak a lot of low level details. The sg_read utility can be used to measure disk cache throughput, transport speeds and command overhead. Recently I have been looking at measuring command overhead. On the disks that I am testing a zero block READ (i.e. issue a SCSI READ for zero blocks) is the fastest command. The most recent released sg3_utils can be found at: http://www.torque.net/sg [Utilities section] The latest beta is in the news section of that page. A description can be found at: http://www.torque.net/sg/u_index.html Doug Gilbert - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/