[1498] in linux-net channel archive
double acks?
daemon@ATHENA.MIT.EDU (Olaf Erb)
Thu Dec 7 17:28:42 1995
To: linux-net@vger.rutgers.edu
Date: Wed, 6 Dec 1995 22:32:25 +0100 (MET)
From: erb@inss1.etec.uni-karlsruhe.de (Olaf Erb)
Reply-To: erb@inss1.etec.uni-karlsruhe.de
I'm wondering if anyone hasn't noticed that Linux always sends double
acks on tcp sessions. Just a little example:
44.130.41.11.1186 > 44.130.29.32.79: P 1:3(2) ack 1 win 432
Data (2): ^M^J (DF)
44.130.29.32.79 > 44.130.41.11.1186: . ack 3 win 1024
44.130.29.32.79 > 44.130.41.11.1186: . ack 3 win 1024
This is on a very slow radio link. The same happens on slip, and
on other slow links (100ms rtt is enough to get 2 acks).
(tested on 1.2.13, 1.3.45).
On slow links every packet is important, so maybe someone already has a
solution? Or is it a bug in my config, since nobody mentioned it here or
in the newsgroups?
Thanks,
Olaf
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