Re: my broken TCP is faster on broken networks

Alan Cox (alan@lxorguk.ukuu.org.uk)
Sat, 12 Sep 1998 15:01:29 +0100 (BST)


> suggested improvements. One in particular is increasing the initial
> congestion window
> from 1 packet to 2 or more. I beleive this will
> greatly help things.

There was a certain amount of fighting for and against this but the
studies do show fairly clearly that except for already extremely overloaded
pipes it is a definite win, and the WG accepted it.

> Instead of abandoning exponential backoff, Linux might consider increasing
> the initial congestion window in accordance with the latest drafts from the
> tcp-impl working group.

This would be a good thing to do anyway. At least as a tunable

> Other wild options:
> o) T/TCP - Unfortunately, this never caught on, but
> might have been quite a good fit for HTTP.
> (See Stevens TCP/IP illustrated vol 3 )

Charles Hannum pretty much buried the original T/TCP from its security
viewpoint. The rather interesting beginnings of the "how do we rewrite
T/TCP" discussion disappeared off tcp-impl in the direction of end2end
very recently too.

Alan

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