From owner-freebsd-net Wed Sep 1 7:15:40 1999 Delivered-To: freebsd-net@freebsd.org Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by hub.freebsd.org (Postfix) with ESMTP id 6FC15154CA for ; Wed, 1 Sep 1999 07:15:35 -0700 (PDT) (envelope-from gallatin@cs.duke.edu) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.9.1/8.9.1) with ESMTP id KAA26261; Wed, 1 Sep 1999 10:15:01 -0400 (EDT) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.9.3/8.9.1) id KAA62795; Wed, 1 Sep 1999 10:15:01 -0400 (EDT) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Wed, 1 Sep 1999 10:15:00 -0400 (EDT) To: Phil Regnauld Cc: freebsd-net@FreeBSD.ORG Subject: Re: Testing gigabit NIC/ switches and 3C985B-SX support In-Reply-To: <19990901160814.23604@ns.int.ftf.net> References: <19990901160814.23604@ns.int.ftf.net> X-Mailer: VM 6.43 under 20.4 "Emerald" XEmacs Lucid Message-ID: <14285.13363.795038.838208@grasshopper.cs.duke.edu> Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Phil Regnauld writes: > [a bit off-topic] > > A colleague of mine is using 3Com 9300 SSII gigabit switches > in tandem with 3C985B-SX 1000baseSX NICs (we don't support those, do we ?) > > Using NT (Compaq PII-400 boxes) they get 132~133 Mbit/s (tested with netperf), > thorough the switch. > > 3Com has drivers for Linux (2.1.131), but I wonder if Linux would > be realistic enough for this kind of tests -- any suggestions ? > > 131 seems a bit low -- I've heard of 250-300 Mbit/s on that kind of hardware > (maybe not with NT :-) > These should be supported using the tigon driver (if_ti). You can expect about 2-3x this level of performance from FreeBSD. Perhaps even more if you can use "jumbo" (aka 9000 byte) frames. Does this 3Com 9300 SSII switch support jumbo frames? Cheers, Drew ------------------------------------------------------------------------------ Andrew Gallatin, Sr Systems Programmer http://www.cs.duke.edu/~gallatin Duke University Email: gallatin@cs.duke.edu Department of Computer Science Phone: (919) 660-6590 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message