From: Eric Whiting Subject: Re: 2.4.20rc1 NFS V3 UDP client problems Date: Thu, 14 Nov 2002 11:12:38 -0700 Sender: nfs-admin@lists.sourceforge.net Message-ID: <3DD3E796.46E4F4AC@amis.com> References: <3DD3DF5F.854AD688@amis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from dermis.amis.com ([207.141.5.253]) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 18COLq-0006qx-00 for ; Thu, 14 Nov 2002 10:04:26 -0800 Received: from amis.com (gannett.design.amis.com [172.16.17.181]) by mailtest.design.amis.com (Postfix) with ESMTP id B2226F52E for ; Thu, 14 Nov 2002 11:53:33 -0700 (MST) To: "nfs@lists.sourceforge.net" 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: I disabled jumbo frames and I'm seeing 70M/s reads (with a clean cache).. There must be a UDP or NFS client problem with the 9000 mtu packets. eric Eric Whiting wrote: > > I'm seeing some 2.4.20rc1 client problems. > > 25 seconds to write a 1G file > 13 minutes to read that file back > > CLIENT 2.4.20rc1 NFSV3 UDP HIGHMEM SUPPORT ON > gigE card with jumbo frames enabled > Tested with both netgear and intel -- same result > > SERVER > Netapps 825 ontap 6.3 > gigE card with jumbo frames enabled > > private point-to-point connection. > > Is this a HIGHMEM problem? Or is it related to jumbo frames? I'll test > with both disabled. > > I'm seeing network errors on the client -- dropped and overruns are both > the same. > > Anything I should try? > > eric > > # time dd if=/dev/zero of=file1 bs=1G count=1 > 1+0 records in > 1+0 records out > > real 0m25.881s > user 0m0.000s > sys 0m4.220s > > (run a program to calloc 1G of RAM and clear some buffer cache) > > # time dd if=file1 of=/dev/null > > 2097152+0 records in > 2097152+0 records out > > real 13m7.445s > user 0m0.370s > sys 0m2.160s > > # ifconfig eth0 > eth0 Link encap:Ethernet HWaddr 00:02:B3:AC:52:F5 > inet addr:10.0.0.2 Bcast:10.255.255.255 Mask:255.0.0.0 > UP BROADCAST RUNNING MULTICAST MTU:9000 Metric:1 > RX packets:1534585 errors:10240 dropped:10240 overruns:10240 > frame:0 > TX packets:5332748 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:100 > RX bytes:2069590604 (1973.7 Mb) TX bytes:587855320 (560.6 Mb) > Interrupt:12 Base address:0xc000 Memory:ea020000-ea040000 > > ------------------------------------------------------- > This sf.net email is sponsored by: To learn the basics of securing > your web site with SSL, click here to get a FREE TRIAL of a Thawte > Server Certificate: http://www.gothawte.com/rd524.html > _______________________________________________ > NFS maillist - NFS@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/nfs ------------------------------------------------------- This sf.net email is sponsored by: To learn the basics of securing your web site with SSL, click here to get a FREE TRIAL of a Thawte Server Certificate: http://www.gothawte.com/rd524.html _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs