Re: [LARTC] TCP Rate Control

[Varun Varma <varun@mindsw.com>]

Stef, Michael,

>>Its worth reading up on how RED works while you're at it.  There are many
>>good
>>whitepapers on RED/GRED w.r.t. how TCP handles exponential backoff.  As I
>>understand it, TBF may not work all the time because the TCP server
>>(sending the packets) may respond incorrectly to the delayed ACKs on the
>>part of the client.  Dropping packets in a RED fashion as the queue builds
>>up instead of queuing the packets should get perfectly stable 100kbit/s.
> 
> I think we can use some test results to prove this.  Varun ??

This mail caught me in the middle of writing a long theoritical 
explanation of why I think rate control might be better, which included 
my technical, philosophical, financial and ..er.. sexual reasons.

But then I looked at this mail and realised that the best way to take 
this forward is tests. I would be game to testing both TBF and RED in 
the jig I have mentioned in my previous mail. Hopefully, should be able 
produce comprehensive documentation, including detailed explanation of 
the test setup, and the results over this weekend.

Regards,
-Varun


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