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Date: Wed, 15 Oct 1997 18:00:45 -0600 (MDT)
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From: Nate Williams <nate@mt.sri.com>
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To: Mike Smith <mike@smith.net.au>
Cc: Nate Williams <nate@mt.sri.com>, Adept <adept@cep.yale.edu>,
        Brian Somers <brian@awfulhak.org>, William Bulley <web@merit.edu>,
        freebsd-mobile@freebsd.org
Subject: Re: 3C589 performance (was Re: obtaining 3COM 3C589C PC-CARDs ) 
In-Reply-To: <199710152346.JAA02289@word.smith.net.au>
References: <199710151558.JAA11838@rocky.mt.sri.com>
	<199710152346.JAA02289@word.smith.net.au>
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> > [ Bad throughput on 3c589 cards ]
> > 
> > > On a silent network, their throughput is fine.  Unfortunately, it 
> > > appears that the '589 suffers from similar problems to other 3Com cards 
> > > on networks with other traffic; I see transfers out of this system as 
> > > slow as 50K/sec on a lightly to moderately loaded network.  Others have 
> > > reported similar experiences with other cards (3C509, 3C59x, 3C90x).
> > 
> > Hmm, I use our 3c589 on SRI-MP's *wiped out* network, and get the same
> > sorts of performances that the Sparc-20's get, which about 500-700K/sec.
> > Nothing spectacular, but the network is saturated with NFS traffic most
> > of the time, so collisions are a regular occurance.
> 
> Is that inbound or outbound?  Inbound I see similar figures, it's 
> outbound that the problems arise.

Both ways.


Nate