From owner-freebsd-hackers Mon May 19 16:48:16 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id QAA26777 for hackers-outgoing; Mon, 19 May 1997 16:48:16 -0700 (PDT) Received: from etinc.com (et-gw-fr1.etinc.com [204.141.244.98]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id QAA26581 for ; Mon, 19 May 1997 16:44:48 -0700 (PDT) Received: from ntws (ntws.etinc.com [204.141.95.142]) by etinc.com (8.8.3/8.6.9) with SMTP id TAA04331; Mon, 19 May 1997 19:52:04 -0400 (EDT) Message-Id: <3.0.32.19970519194109.00c53a50@etinc.com> X-Sender: dennis@etinc.com X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Mon, 19 May 1997 19:41:17 -0400 To: sthaug@nethelp.no, rcarter@consys.com From: dennis Subject: Re: throughtput measurements for fast ethernet Cc: hutton@isi.edu, hackers@FreeBSD.ORG Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk At 12:28 AM 5/20/97 +0200, sthaug@nethelp.no wrote: >> > 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. Where did you get this figure? We wrote a little dos utility about a billion years about (that does 16-bit transfers, BTW) and gets over 350Mbs on a 100Mhz Pentium MB, which you can probably double with 32-bit transfers. Dennis