Return-Path: linux-nfs-owner@vger.kernel.org Received: from cn.fujitsu.com ([222.73.24.84]:54471 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752198Ab2B0HAf convert rfc822-to-8bit (ORCPT ); Mon, 27 Feb 2012 02:00:35 -0500 Message-ID: <4F4B224C.8030101@cn.fujitsu.com> Date: Mon, 27 Feb 2012 14:27:24 +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> In-Reply-To: <20120222172510.GA12708@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 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 --b > > --b. > >> ipaddr2:192.168.1.19 >> >> 192.168.1.100 <-------- NFS4.1 connection --------->192.168.1.101 >> 192.168.0.100 <-------- NFS4.1 connection --------->192.168.0.102 >> 192.168.0.19 <-------- NFS4.1 connection --------->192.168.0.100 >> >> Dunring the write process, the client output the message: >> FS-Cache: Loaded >> FS-Cache: Netfs 'nfs' registered for caching >> nfs4filelayout_init: NFSv4 File Layout Driver Registering... >> nfs: server 192.168.1.101 not responding, timed out >> >> The message "nfs: server 192.168.1.101 not responding, timed out" was >> output during the COMMIT request. >> >> Who can tell me the reason why pnfs cost so long time. >> >> >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >