Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!ames!pasteur!ucbvax!UTDALVM1.BITNET!LIPPKE
From: LIPPKE@UTDALVM1.BITNET (David Lippke)
Newsgroups: comp.protocols.tcp-ip
Subject: TCP simulator wanted
Message-ID: <8807100545.AA19765@ucbvax.Berkeley.EDU>
Date: 9 Jul 88 04:33:47 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 26

We've recently put some effort into benchmarking various combinations of
  TCP/IP software and ethernet controllers on IBM mainframes running VM.
  The results of this testing have now been analyzed to death and we're
  preparing for a second series of tests later this year.

Most of the performance problems of the current software/hardware in this
  area are related to a long latency from packet reception to the processing
  of that packet by the software (i.e., this latency tends to be much
  greater than the transmit-commit to network latency).

I'm currently trying to quantify the effect that cutting one latency or
  another will have on TCP performance.  I think I may be homing in on
  some decent conclusions and I plan on creating some live tests,
  but it would be much easier to try out my theories if I had access
  to some software which would simulate two interconnected TCPs.

I'm not after anything too complex; something that will simulate a single
  established connection and let me adjust various parameters would be a
  useful starting point.

Anyone have something even remotely applicable?

Kind Regards,
              David Lippke
              The University of Texas at Dallas
              214-690-2632