On Mon, Nov 27, 2000 at 12:31:08PM +0200, Pekka Pietikainen wrote:
> Hi
>
> A co-worker is having performance problems when doing Linux to Solaris
> transfers on WAN's.
>
Seems to be fixed by patches in Alexey's zerocopy diff
(Tested only on a box with 10baseT though, I'll try to backport the changes
to 2.2 and test this on the boxes he had problems with, the pipe
certainly can handle quite a bit more than 10Mbps even though it's
transatlantic ;) )
Not related to zerocopy:
* rtt is calculated not by the last acked packet, but the earlier one.
* tcp_input has hole allowing to cancel backoff even if not retransmitted
data was acked.
[ After some discussion with Andrey Gurtov. He proposed to relax Karn
algo, to be honest. 8) Well, and result is more strong. ]
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