Date: Wed, 02 Jul 1997 21:30:28 -0400 From: Sylvain St-Laurent <sstlaure@cgocable.ca> To: freebsd-questions@freebsd.org Subject: Question about TCP/IP stack implementation. Message-ID: <33BB00B4.205C5A93@cgocable.ca>
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Hi,
I have a 2048 kbits satellite link with a RTT (Round-Trip Time) =
350ms. Usually, the "bandwidth*delay product" give the TCP window size
to optimize the link (RFC-1323). Thus, my window size should be approx.
92 KBytes.
Do I need to change the window size in FreeBSD 2.1.7.1 ? *** [1] ***
If so, how can I set the new window size (and TCP Window Scale
Option) in the source code ?
*** [1] *** - It's strange, I set the window size to 4096 bytes in the
"tcp.h" file, I download with FTP on SGI-IRIX 6.2 server and the window
size work, my transfert rate was small (~5.5KB). But, when I download
(FTP) with the same window size on FreeBSD 2.1.7.1 server, the window
size is ignored. WHY ? What's the difference, in the TCP/IP stack,
between IRIX and FreeBSD ?
Thanks
======================
Sylvain St-Laurent
R&D Director
CESART Int.inc.
http://www.cesart.com
sylvain.st-laurent@cesart.com
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