From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brett Petrusek Subject: IA64 Server / IA32 Client Problem Date: Wed, 20 Jul 2005 16:37:18 -0600 Message-ID: <42DED21E.4010608@aspsys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list2.sourceforge.net with esmtp (Exim 4.30) id 1DvN9T-0003rT-AD for nfs@lists.sourceforge.net; Wed, 20 Jul 2005 15:34:55 -0700 Received: from [216.150.199.16] (helo=mail.aspsys.com) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.44) id 1DvN9T-0007bl-5n for nfs@lists.sourceforge.net; Wed, 20 Jul 2005 15:34:55 -0700 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.aspsys.com (Postfix) with ESMTP id B087869001B for ; Wed, 20 Jul 2005 16:34:54 -0600 (MDT) Received: from [192.168.0.38] (unknown [192.168.0.38]) by mail.aspsys.com (Postfix) with ESMTP id 0DC6B69000B for ; Wed, 20 Jul 2005 16:34:54 -0600 (MDT) To: nfs@lists.sourceforge.net Sender: nfs-admin@lists.sourceforge.net 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: I'm not sure if this is a bug or what, but I am experiencing severe performace problems between an IA64 NFS server and IA32 NFS client. I have tried every combination of socket buffer sizes as well as many other nfs options, but none of them seem to have any effect. I have tried RHEL21 to RHEL3U5 with all of these socket combos and still no difference. The command I am running is: time dd if=/dev/zero of=/scratch_dir_across_nfs bs=1M count=128 Between two IA32 machines this takes 4-5 seconds. Between IA64 server and IA32 client this takes on the order of minutes. Network performance has been eliminated from the equation as after kernel tuning we have achieved consistent 94% of peak tcp throughput and 95.7% of peak udp throughput on our GigE network. This is both between IA32 and IA64 systems. Let me know if there is an other info I should provide to help troubleshoot this problem. Any help is appreciated. Thanks, Brett P ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs