Date: Tue, 20 May 1997 00:28:03 +0200 From: sthaug@nethelp.no To: rcarter@consys.com Cc: hutton@isi.edu, hackers@FreeBSD.ORG Subject: Re: throughtput measurements for fast ethernet Message-ID: <12250.864080883@verdi.nethelp.no> In-Reply-To: Your message of "Fri, 16 May 1997 10:09:58 -0700" References: <199705161709.KAA05644@conceptual.com>
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> > 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
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