Return-Path: linux-nfs-owner@vger.kernel.org Received: from fieldses.org ([174.143.236.118]:55386 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754977Ab2B1BxY (ORCPT ); Mon, 27 Feb 2012 20:53:24 -0500 Date: Mon, 27 Feb 2012 20:53:24 -0500 From: "J. Bruce Fields" To: Fu Liankun Cc: linux-nfs@vger.kernel.org Subject: Re: spnfs write performance issue Message-ID: <20120228015324.GB28042@fieldses.org> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 In-Reply-To: <4F4C3262.9050301@cn.fujitsu.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: 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. So, you're the expert. --b.