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Shady areas of TCP window autotuning?

On 2009-3-17, at 12:10, Tony Finch wrote:
> On Tue, 17 Mar 2009, Joe Maimon wrote:
>>> TCP needs drops to manage to the right speed.
>> This is whats bad. TCP should be slightly more intelligent and start
>> considering rtt jitter as its primary source of congestion  
>> information.
> TCP Vegas did this but sadly it never became popular.
> (It doesn't compete well with Reno.)

FWIW, Compound TCP does this (shipping with Vista, but disabled by  
default.) There are other delay-based or delay-sensitive TCP flavors,  

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