Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.BERKELEY.EDU Path: utzoo!watmath!clyde!cbosgd!ucbvax!tcp-ip From: narten@PURDUE.EDU ("Thomas Narten") Newsgroups: mod.protocols.tcp-ip Subject: wanted: TCP retransmission timer calculation info Message-ID: <8512171925.AA13339@merlin.Purdue.EDU> Date: Tue, 17-Dec-85 14:25:04 EST Article-I.D.: merlin.8512171925.AA13339 Posted: Tue Dec 17 14:25:04 1985 Date-Received: Thu, 19-Dec-85 05:33:49 EST Sender: usenet@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 16 Approved: tcp-ip@sri-nic.arpa I am doing some work with TCP running on slow speed (9600 baud) full duplex lines. Hosts may be directly connected, or be separated by several hops. Measurements show round trip times exceeding 4-5 seconds. Throughput is severely degraded, due to TCP retransmissions. I am looking for algorithms (and references to them) for computing retransmission timer values. I have had no luck so far in finding references to any. Can someone point me to references for the one used under 4.2 UNIX or any other system? Please respond by mail, as I am not on this mailing list (yet). Thanks, Thomas Narten narten@purdue.EDU ----------