Re: TCP acking too fast

Andi Kleen (
14 Oct 2001 11:25:09 +0200

In article <>,
"David S. Miller" <> writes:

> So, your point is? :-) A sensible sending application, and a sensible
> TCP should not being setting PSH every single segment. And we're not
> coding up hacks to make the Linux receiver handle this case better.
> You'll have much better luck convincing us to implement ECN black hole
> workarounds :-)

Ignoring PSH completely on RX would probably not be a worse heuristic
than forcing an ACK on it. At least other stacks seem to do fine too
without the force-ack-on-psh. I think you added it a long time ago, but
I do not remember why you did it; but at least here is an counter example
now that may be a good case for a reconsider.

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