From owner-freebsd-fs@FreeBSD.ORG Fri May 26 08:15:52 2006 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C58C416A45B; Fri, 26 May 2006 08:15:52 +0000 (UTC) (envelope-from yanyuejin2004@hotmail.com) Received: from hotmail.com (bay23-f22.bay23.hotmail.com [64.4.22.72]) by mx1.FreeBSD.org (Postfix) with ESMTP id 88CC943D46; Fri, 26 May 2006 08:15:52 +0000 (GMT) (envelope-from yanyuejin2004@hotmail.com) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 26 May 2006 01:15:52 -0700 Message-ID: Received: from 69.45.64.18 by by23fd.bay23.hotmail.msn.com with HTTP; Fri, 26 May 2006 08:15:51 GMT X-Originating-IP: [61.187.16.2] X-Originating-Email: [yanyuejin2004@hotmail.com] X-Sender: yanyuejin2004@hotmail.com In-Reply-To: <20060525215810.GB31540@xor.obsecurity.org> From: "etalk etalk" To: kris@obsecurity.org, freebsd-fs@freebsd.org, freebsd-fs-request@freebsd.org, freebsd-performance-request@freebsd.org Date: Fri, 26 May 2006 16:15:51 +0800 Mime-Version: 1.0 Content-Type: text/plain; charset=gb2312; format=flowed X-OriginalArrivalTime: 26 May 2006 08:15:52.0294 (UTC) FILETIME=[9A8EC860:01C6809C] Cc: Subject: Re: about ufs filesystem io performance! X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 May 2006 08:15:53 -0000 >From: Kris Kennaway >To: etalk etalk >CC: freebsd-fs@freebsd.org, freebsd-performance-request@freebsd.org >Subject: Re: about ufs filesystem io performance! >Date: Thu, 25 May 2006 17:58:10 -0400 > >On Thu, May 25, 2006 at 08:12:42PM +0800, etalk etalk wrote: > > 5.3 vs 6.0 > > The test tool is Iozone3_257, and the test command is ??./iozone -A -f > > /mnt/tmpfile.test -g 1g -n 1m -q 8k -y 2k -R -b outfile-Af.xls ?? > > (http://www.iozone.org/src/current/). We ran all the tests on the same PC > > with 2.4 GHz Pentium CPU and 512M main memory. Figure1~Figure5 show the > > results of the file system performance comparison between Bsd5.3??s UFS2 > > and Bsd6.0??s UFS2 when testing with different file system (local, sync, > > async, softupdate, sync+softupdate). > > > > According to the figures, our conclusion is: > > On all kinds of file systems, the write, rewrite, read and reread > > performance of the two is almost same and we cant say that Bsd6.0 make a > > improvement on file system IO performance. > >Very unlikely, since the former is giant locked and the latter not. I >saw a performance improvement of up to a factor of 7 in favour of 6.0 >when I tested concurrent I/O. > >http://people.freebsd.org/~kris/bsdcan/Filesystem%20Performance.pdf > >If this is truly what you're seeing, then you're probably hitting some >other bottleneck and not actually testing filesystem performance. > >Kris I can not see the pdf file,and how can i test concurrent I/O in 5.3 vs 6.0, is there some tools or patch? ><< attach3 >> _________________________________________________________________ 与联机的朋友进行交流，请使用 MSN Messenger: http://messenger.msn.com/cn