From mboxrd@z Thu Jan 1 00:00:00 1970 From: rwhron@earthlink.net Subject: RE: 82540EM very slow on 2.6.0-test[45] Date: Wed, 10 Sep 2003 21:14:43 -0400 Sender: netdev-bounce@oss.sgi.com Message-ID: <20030911011443.GA22440@rushmore> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@oss.sgi.com Return-path: To: scott.feldman@intel.com Content-Disposition: inline Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org >> ftp'ing a multi-megabyte file gives about 16-20k/second >> throughput. The destination machine was running Solaris 8. > Linux -> Solaris Linux doing an ftp put on Solaris. >> This is a dual boot Dell P4. XP is about 1000x faster for >> an ftp xfer, so the network seems okay. > Is this Linux -> XP or XP -> Solaris? Trying to eliminate one player. Linux ftp put to Solaris is slow. When booted into XP, ftp put to Solaris is fast. Solaris -> Solaris is fast too. > What about Linux -> Linux? Is that slow? I will try that and some other combinations. >> dmesg shows "e1000: eth0 NIC Link is Up 100 Mbps Full Duplex". > This feels like a duplex mis-match. Could well be. On our LAN, Solaris often has to be forced full-duplex because auto-negotiate to the switches gives half-duplex. The ftp server is full duplex. The client and server are on different segments. I'll check if the PC is using correct duplex/speed for it's segment. > Are you using the same cable for the different tests? Yes. Same cable, same PC. I swapped CAT5 cables, but that didn't change throughput. Thanks for the suggestions! -- Randy Hron http://home.earthlink.net/~rwhron/kernel/bigbox.html