[3903] in linux-net channel archive
Re: FYI; Expotential TCP Backoff (fwd)
daemon@ATHENA.MIT.EDU (Eric Schenk)
Mon Jul 29 19:44:09 1996
To: ecki@lina.inka.de (Bernd Eckenfels)
cc: linux-net@vger.rutgers.edu
In-reply-to: Your message of "Mon, 29 Jul 1996 15:14:24 EDT."
<m0ukxlp-0004jWC@lina>
Date: Mon, 29 Jul 1996 19:12:51 -0400
From: "Eric Schenk" <schenk@cs.toronto.edu>
Time to put on my Theoreticians hat...
Bernd Eckenfels <ecki@lina.inka.de> writes:
>Alan Cox
>>Bernd
>> > some time ago someone send a patch to cntrol Linux TCP Backoff behaviour. I
>> > jus read about an analysis of different Backoff startegies including patches
>> > for BSD on http://www.iet.unipi.it/~luigi/tcp.ps. Since I dont have the
>> > teoretical Background and the deail knowledge about Linux-net, I thought you
>> > might be interested (If youalready know about it, ignore my message :)
>>
>> Its probably a good on to let linux-net@vger know about
I've got a copy of this. I've given it a cursory reading.
My first impression is that there may be a good idea underneath it,
but the mathematical argument seems very weak to me. My guess
is that if this proposal were implemented as is on a wide scale we would
see massive congestion collapse problems. Basically the paper
is claiming that Van Jacobson's analysis is wrong, and that expoential
backoff is not necessary. One or the other paper must be in error.
At this point I'm not betting against Jacobson, although I do plan
to give this issue a serious look as an analysis problem.
Heck, it may be worth a paper or two :-)
-- eric
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Eric Schenk www: http://www.cs.toronto.edu/~schenk
Department of Computer Science email: schenk@cs.toronto.edu
University of Toronto
