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From: lekash@ORVILLE.NAS.NASA.GOV
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Ethernet - Hyperchannel Gateway
Message-ID: <8711022230.AA00742@orville.nas.nasa.gov>
Date: Mon, 2-Nov-87 17:30:25 EST
Article-I.D.: orville.8711022230.AA00742
Posted: Mon Nov  2 17:30:25 1987
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>From our experience, the actual sustained rate is 600/sec, assuming
no associated data and no contention on a dedicated trunk.  [Measured
between two Crays on a one meter coax trunk.]

Measured between two crays running what?  We measured 5mbits/second
effective data from silicon graphics workstations running unix to 
a cray2 running unix.  Using a 4096 associated data, and a little 
arithmetic, this is 1220 packets/second.  The cray2 has an A130,
the workstation an A400 hyperchannel adapter.  

17 mbit/sec was measured memory to memory on TCP on the same 
cray2, going out one adapter, and in another.  I will admit 
that this is thus a somewhat suspect number, but we don't have
a second cray2, yet.