Return-Path: linux-nfs-owner@vger.kernel.org Received: from cn.fujitsu.com ([222.73.24.84]:64968 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S932340Ab2B1CPw convert rfc822-to-8bit (ORCPT ); Mon, 27 Feb 2012 21:15:52 -0500 Message-ID: <4F4C387D.3070003@cn.fujitsu.com> Date: Tue, 28 Feb 2012 10:14:21 +0800 From: Fu Liankun MIME-Version: 1.0 To: "J. Bruce Fields" CC: linux-nfs@vger.kernel.org Subject: Re: spnfs write performance issue References: <4F44C071.8010104@cn.fujitsu.com> <20120222172510.GA12708@fieldses.org> <4F4B224C.8030101@cn.fujitsu.com> <20120227120136.GA21384@fieldses.org> <4F4C2EAA.1010505@cn.fujitsu.com> <20120228014618.GA28042@fieldses.org> <4F4C3262.9050301@cn.fujitsu.com> <20120228015324.GB28042@fieldses.org> In-Reply-To: <20120228015324.GB28042@fieldses.org> Content-Type: text/plain; charset=UTF-8; format=flowed Sender: linux-nfs-owner@vger.kernel.org List-ID: J. Bruce Fields 写道: > On Tue, Feb 28, 2012 at 09:48:18AM +0800, Fu Liankun wrote: >> J. Bruce Fields 写道: >>> On Tue, Feb 28, 2012 at 09:32:26AM +0800, Fu Liankun wrote: >>>> J. Bruce Fields 写道: >>>>> On Mon, Feb 27, 2012 at 02:27:24PM +0800, Fu Liankun wrote: >>>>>> J. Bruce Fields 写道: >>>>>>> On Wed, Feb 22, 2012 at 06:16:17PM +0800, Fu Liankun wrote: >>>>>>>> When copy a big file(about 500MB) to nfs server using pnfs, it cost >>>>>>>> obvious longer time as compared with NFSv3 or NFSv4 protocol. >>>>>>>> >>>>>>>> PNFS cost about 300-550s >>>>>>>> NFSv3 cost about 49s >>>>>>>> NFSv4 cost about 49s >>>>>>>> >>>>>>>> My test environment as following: >>>>>>>> >>>>>>>> MDS: 3.1.0-rc8-pnfs ipaddr1: 192.168.0.100, ipaddr2:192.168.1.100 >>>>>>>> DS1: 3.1.0-rc8-pnfs ipaddr1: 192.168.0.101, ipaddr2:192.168.1.101 >>>>>>>> DS2: 3.1.0-rc8-pnfs ipaddr1: 192.168.0.102, ipaddr2:192.168.1.102 >>>>>>>> client: RHEL6.2GA(2.6.32-220.el6.i686) ipaddr1: 192.168.0.19, >>>>>>> What kind of server are you using? >>>>>> Sorry for late response. >>>>>> >>>>>> Fedora14 + 3.1.0-rc8-pnfs >>>>> And you're exporting gfs2? >>>> No. I'm exporting ext4. >>>> Does the file system type would influence the result? >>> So you're using local-pnfs? Or spnfs? What setup instructions did you >>> follow? >> I'm using spnfs. > > OK, got it. > > I'm not sure if anyone here can talk about the performance of spnfs. > It's not really maintained as far as I know. > Got it. I will keep on investigating the issue. --b > So, you're the expert. > -- ---- Best wishes Fu Liankun