From: "Quentin Fennessy" Subject: Re: 2.4.20-rc1 NFS/TCP client (still) hangs running dbench 2.0 Date: Sun, 03 Nov 2002 08:16:34 -0600 Sender: nfs-admin@lists.sourceforge.net Message-ID: References: <0211011318080N.01583@stinkpad060501> <3DC2E7B6.6090400@collab.net> <0211011318080N.01583@stinkpad060501> <5.0.2.1.0.20021102211350.0291eec0@pop.sfrn.dnai.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: trond.myklebust@fys.uio.no, nfs@lists.sourceforge.net Return-path: Received: from amdext2.amd.com ([163.181.251.1]) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 188LYX-0005Qe-00 for ; Sun, 03 Nov 2002 06:16:49 -0800 To: "Andrew Ryan" In-Reply-To: <5.0.2.1.0.20021102211350.0291eec0@pop.sfrn.dnai.com> ( "Andrew Ryan"'s message of "Sat, 02 Nov 2002 21:21:02 -0800") Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: >>>>> Andrew Ryan writes: > At 10:58 PM 11/1/02 +0100, Trond Myklebust wrote: >> It is probably just the (known) accounting error in the 'retransmit' >> statistics. Try applying the patch >> >> http://www.fys.uio.no/~trondmy/src/2.4.20-pre9/linux-2.4.20-01-call_start.dif >> >> if it bothers you. > Yes, you are right, it seems the counter is broken, and performance is > fine. I did bonnie++ runs with 2.4.20rc1 kernels with and without the > call_start patch, and didn't see any significant difference. > But, it does bother me since I want to be able to diagnose network errors if > I ever have them, and with a busted counter it will be impossible to tell > what my real error rate is. Can the call_start patch go to Marcelo for > 2.4.20rc2? I'm an end user with approximately 3000 Linux NFS clients. I will really appreciate correct counters when I'm debugging nfs server, client and network problems. I've had to ignore spurious counts of nfs retrans while debugging network issues. I hope this patch will be in 2.4.20rc2. Thanks to all of you for providing an excellent client-side implementation. And I am serious. > After a bonnie run with the call_start patch, I get this, which is much > better :) > $ nfsstat -c > Client rpc stats: > calls retrans authrefrsh > 1648050 0 0 -- Quentin Fennessy Quentin.Fennessy@amd.com Office: 512.602.3873 Cell: 512.694.7489 ------------------------------------------------------- This SF.net email is sponsored by: ApacheCon, November 18-21 in Las Vegas (supported by COMDEX), the only Apache event to be fully supported by the ASF. http://www.apachecon.com _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs