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Re: 2.6.10 TCP troubles -- suggested patch

To: "David S. Miller" <davem@xxxxxxxxxxxxx>
Subject: Re: 2.6.10 TCP troubles -- suggested patch
From: Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>
Date: Sat, 12 Feb 2005 22:52:46 +0300
Cc: Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>, rick.jones2@xxxxxx, hubert.tonneau@xxxxxxxxxxxxxx, shemminger@xxxxxxxx, romieu@xxxxxxxxxxxxx, netdev@xxxxxxxxxxx
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Hello!

> It is correct.  Although, I am still believing that setting PSH
> is the avenue of investigation.

Exactly. That's why the next test should be with disabled TSO in 2.6.9.
If too rare PSHs were a problem, it will show as the same disaster there.

[ And, to be honest, in this case, I daresay MacOS X may be left with its bugs
  alone. Or we could help it with something like setting PSH when we are in slow
  start and each half of CWND after completion of slow start. Or just set
  PSH on each frame. ]

Alexey

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