From: Vincent ROQUETA Subject: Re: Poor NFS performance, kernel 2.6.6. Date: Thu, 27 May 2004 14:45:37 +0200 Sender: nfs-admin@lists.sourceforge.net Message-ID: <200405271445.37049.vincent.roqueta@ext.bull.net> References: <200405271251.22746.vincent.roqueta@ext.bull.net> Reply-To: vincent.roqueta@ext.bull.net Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list2.sourceforge.net with esmtp (Exim 4.30) id 1BTKCz-0004au-20 for nfs@lists.sourceforge.net; Thu, 27 May 2004 05:42:05 -0700 Received: from ecbull20.frec.bull.fr ([129.183.4.3]) by sc8-sf-mx2.sourceforge.net with esmtp (Exim 4.30) id 1BTKCx-0005kk-HD for nfs@lists.sourceforge.net; Thu, 27 May 2004 05:42:03 -0700 Received: from roquetav (roquetav.frec.bull.fr [129.183.101.52]) by ecbull20.frec.bull.fr (8.9.2/8.9.1) with ESMTP id OAA12988 for ; Thu, 27 May 2004 14:43:31 +0200 To: nfs@lists.sourceforge.net In-Reply-To: Errors-To: nfs-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Post: List-Help: List-Subscribe: , List-Archive: Le Jeudi 27 Mai 2004 14:17, Harald Hannelius a =E9crit : > On Thu, 27 May 2004, Vincent ROQUETA wrote: > > Le Jeudi 27 Mai 2004 12:31, Harald Hannelius a =E9crit : > > > Is there some way I can look at the nfs-server what it's doing? Any > > > suggestions on solutions for this? > > > > > > And what datarates over NFS could I expect on a setup like this? > > > Half-wirespeed maybe? > > > > on NFSv3, 1 ethernet 1GB I reached 89% of the avalaible brandwith for > > NFSv3, kernel 2.6.3, for file less than the total amount of ram (4Go), > > and 22% of the brandwith for file over 6Go, because of the use of > > harddisk use in the copy process (swap). > > > > What is your memory configuration? > > I took a look at "top" while reading the file on the client; > > It looks like it's sitting there waiting for io. Something for the > kernel-people maybe? > > 15:15:10 up 1 day, 19:31, 4 users, load average: 7.55, 4.31, 3.54 > 93 processes: 92 sleeping, 1 running, 0 zombie, 0 stopped > CPU0 states: 0.0% user 1.2% system 0.0% nice 95.1% iowait 3.0% > idle > CPU1 states: 0.0% user 1.2% system 0.0% nice 90.1% iowait 8.1% > idle > Mem: 1035184k av, 1029660k used, 5524k free, 0k shrd, 18216k > buff > 52712k active, 929460k inactive > Swap: 987956k av, 0k used, 987956k free 957788k > cached > > PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND > 4473 root 16 0 4008 1084 3832 R 0.3 0.1 0:00 1 top > 8 root 5 -10 0 0 0 SW< 0.1 0.0 0:15 0 > kblockd/0 > 9 root 5 -10 0 0 0 SW< 0.1 0.0 0:14 1 > kblockd/1 > 4382 root 15 0 0 0 0 SW 0.1 0.0 0:01 0 nfsd > 4384 root 15 0 0 0 0 SW 0.1 0.0 0:01 0 nfsd > 4386 root 15 0 0 0 0 DW 0.1 0.0 0:01 1 nfsd > 4387 root 15 0 0 0 0 SW 0.1 0.0 0:01 0 nfsd > 4392 root 15 0 0 0 0 DW 0.1 0.0 0:01 0 nfsd > 4394 root 15 0 0 0 0 DW 0.1 0.0 0:00 1 nfsd > 4395 root 15 0 0 0 0 SW 0.1 0.0 0:00 1 nfsd > 4396 root 15 0 0 0 0 DW 0.1 0.0 0:01 0 nfsd > 1 root 16 0 488 240 464 S 0.0 0.0 0:05 1 init That's normal : waiting for IO -> probably waiting for reading something fr= om=20 the network. I am trying to do the same experience. ------------------------------------------------------- This SF.Net email is sponsored by: Oracle 10g Get certified on the hottest thing ever to hit the market... Oracle 10g. Take an Oracle 10g class now, and we'll give you the exam FREE. http://ads.osdn.com/?ad_id=3149&alloc_id=8166&op=click _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs