Just a small clarification:
>> To me the switch to head dropping essentially killed the tail loss RTO >> problem, eliminated most of the need for ecn. > > I doubt that: TCP will need to retransmit that packet at the head, and that > takes an RTT - all the packets after it will need to wait in the receiver > buffer before the application gets them. > But I don’t have measurements to prove my point, so I’m just hand-waving… I don’t doubt that this kills the tail loss RTO problem. I doubt that it eliminates the need for ECN. Cheers, Michael
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