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Old 09-23-2011, 09:24 AM   #1
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Changing TCP initial congestion window

Hello, based on the discussion in, I'd like to change the initial congestion window on a few of my Linux boxes. One way of doing that is by using the 'ip route change' command - something like 'ip route change default via <default gw> dev eth0 metric 100 initcwnd 10'

I was wondering if there is a more generic way of doing this, without having to specify a specific route so that I affects all routes.

Old 09-23-2011, 09:55 AM   #2
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The default has been increased in 2.6.39 and later kernels.
Old 09-23-2011, 10:23 AM   #3
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Unfortunately, the servers that I need to do this on are running 2.6.18. Also, if I change this using the 'ip route change' command, how do I make it persistent? One option is to add the command to /etc/rc.local but isn't there a way to specify this in /etc/sysconfig... or something? Thanks!


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