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From: tcp-ip@ucbvax.ARPA
Newsgroups: fa.tcp-ip
Subject: hyperchannel
Message-ID: <8276@ucbvax.ARPA>
Date: Tue, 18-Jun-85 15:22:47 EDT
Article-I.D.: ucbvax.8276
Posted: Tue Jun 18 15:22:47 1985
Date-Received: Wed, 19-Jun-85 05:27:15 EDT
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Organization: University of California at Berkeley
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From: "Benson I. Margulies" <Margulies@CISL-SERVICE-MULTICS.ARPA>

I have run extensive performance analysis on Hyperchannel connected to
Honeywell equipment.  It goes real fast as a point-to-point stream, and
blows its brains out as soon as there is significant volume pf packet
traffic.  I had to add a home-grown flow-control/retry protocol under IP
to get anything close to rated speed even from IP, due to collisions of
acks and data.  I strongly dis-recommend it.