From owner-freebsd-hackers Mon May 19 15:28:35 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id PAA23363 for hackers-outgoing; Mon, 19 May 1997 15:28:35 -0700 (PDT) Received: from verdi.nethelp.no (verdi.nethelp.no [195.1.171.130]) by hub.freebsd.org (8.8.5/8.8.5) with SMTP id PAA23351 for ; Mon, 19 May 1997 15:28:24 -0700 (PDT) From: sthaug@nethelp.no Received: (qmail 12252 invoked by uid 1001); 19 May 1997 22:28:03 +0000 (GMT) To: rcarter@consys.com Cc: hutton@isi.edu, hackers@FreeBSD.ORG Subject: Re: throughtput measurements for fast ethernet In-Reply-To: Your message of "Fri, 16 May 1997 10:09:58 -0700" References: <199705161709.KAA05644@conceptual.com> X-Mailer: Mew version 1.05+ on Emacs 19.28.2 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Date: Tue, 20 May 1997 00:28:03 +0200 Message-ID: <12250.864080883@verdi.nethelp.no> Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > I was hoping for something more specific. My _first_ tests with the 3com vx > > driver for the 395 pci card on FreeBSD 2.2.1 are not showing good results - > > highest throughput for UDP 45Mbps. I should stress that these were first tests. > > > > Has anyone any traffic measurements for any of the fast ethernet drivers? > > What kind of main memory bandwidth can your motherboards sustain? A > good test is the stream benchmark from McCalpin. Many P6 motherboards > can sustain transfer rates which drive 100mb ethernet at full throttle, > but a lot of P5 motherboards cannot. 45Mbps is not unusual for these. I doubt motherboards are the issue here. I've measured 79 Mbps between two P133s (430FX chipset), using SMC (21140 based) cards. This was done more than a year ago, and the results are in the Netperf database. I got the same figures with ttcp. Steinar Haug, Nethelp consulting, sthaug@nethelp.no