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is there a tcp window size restriction?
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Lee
Jan 2, 2023, 6:20:06 PM1/2/23
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I just noticed that I can't get a 1MB tcp window on debian 11
$ iperf --version
iperf version 2.1.4 (18 August 2021) pthreads
$ iperf -s -w 1M --time 60 -i 10
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 416 KByte (WARNING: requested 1.00 MByte)
The exact same software (.. or at least the same source code) on a
windows 10/cygwin machine says I get the full 1MB tcp window size:
TCP window size: 1.00 MByte
So is there something on the Debian machine limiting the tcp window &
if so, how do I change it.
Thanks
Lee
$ iperf --version
iperf version 2.1.4 (18 August 2021) pthreads
$ iperf -s -w 1M --time 60 -i 10
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 416 KByte (WARNING: requested 1.00 MByte)
The exact same software (.. or at least the same source code) on a
windows 10/cygwin machine says I get the full 1MB tcp window size:
TCP window size: 1.00 MByte
So is there something on the Debian machine limiting the tcp window &
if so, how do I change it.
Thanks
Lee
Dan Ritter
Jan 2, 2023, 7:20:05 PM1/2/23
to
Details are not Debian-specific; sysctl config can be placed in
/etc/sysctl.conf or in the /etc/sysctl.d/ directory.
-dsr-
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