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From: tcp-ip@ucbvax.ARPA
Newsgroups: fa.tcp-ip
Subject: Re: Fragging ARPAnet gateways
Message-ID: <7819@ucbvax.ARPA>
Date: Wed, 5-Jun-85 05:40:00 EDT
Article-I.D.: ucbvax.7819
Posted: Wed Jun  5 05:40:00 1985
Date-Received: Thu, 6-Jun-85 21:24:12 EDT
Sender: daemon@ucbvax.ARPA
Organization: University of California at Berkeley
Lines: 13

From: Murray.pa@Xerox.ARPA

There is another hack that's worth remembering if anybody is having
troubles catching back-to-back packets: Slow down the transmitter. Some
of our Ethernet drivers do that with only a few words of microcode. On
the first (re)transmission, set the collision timer to 1ms.

There are obviously variations and optimizations. The point is that it's
trivial to implement and a small delay won't be noticed by most
applications but it can be a lifesaver in a few critical cases.

Credit where it's due dept: Ed Taft came up with this trick when our
Alto based file servers couldn't keep up with our Dorados.