Date: Fri, 16 May 1997 10:09:58 -0700 From: "Russell L. Carter" <rcarter@consys.com> To: hutton@isi.edu Cc: Christoph Kukulies <kuku@gilberto.physik.RWTH-Aachen.DE>, hackers@FreeBSD.ORG Subject: Re: throughtput measurements for fast ethernet Message-ID: <199705161709.KAA05644@conceptual.com> In-Reply-To: Your message of "Fri, 16 May 1997 08:56:09 PDT." <199705161557.AA13608@zephyr.isi.edu>
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> > > > has anyone got UDP/TCP throughtput figures on FreeBSD for fast ethernet > > > cards...specifically the 3com and Intel Ether Express cards. > > > > Someone told me some time ago when I was seeking for similar > > figures (Garret ?) that FreeBSD can saturate 10/100 Mbit with appropriate > > CPU power. The only interesting question would be CPU utilization during > > transfer compared to other L-word OSs. > > > > > 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. Russell
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