Date: Sat, 13 Mar 1999 22:24:59 -0700 From: Wes Peters <wes@softweyr.com> To: Amancio Hasty <hasty@rah.star-gate.com> Cc: Cory Kempf <ckempf@enigami.com>, Bill Paul <wpaul@skynet.ctr.columbia.edu>, freebsd-hackers@FreeBSD.ORG Subject: Re: Gigabit ethernet -- what am I doing wrong? Message-ID: <36EB482B.14BD236@softweyr.com> References: <199903140500.VAA73230@rah.star-gate.com>
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Amancio Hasty wrote:
>
> > 200 Mb/s = 25 MB/s, which seems a little low, but is within the realm of
> > what I would expect.
>
> I think the system should be able to support at least 70MB/s at least I do over here
> with a bt848 video capture board capturing 640x480x4 at 30 frames per second
> and then displaying the frames on video display card 8)
An article in IEEE Computer magazine last summer reported achieving
320 Mb/s throughput with Myricom Myrinet boards on FreeBSD. I've
seen this number batted around industry publications like Network
World a number of times also. That would seem to require only a 10
Mhz clock with a 32-bit bus bandwidth; is there really this much
overhead in the PCI transactions?
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
http://www.softweyr.com/~softweyr wes@softweyr.com
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