Linux Router: TCP slow, UDP fast

Mikael Abrahamsson swmike at swm.pp.se
Sat Feb 14 07:09:33 CST 2009


On Sat, 14 Feb 2009, Lee wrote:

> Try enabling window scaling
>  echo 1 > /proc/sys/net/ipv4/tcp_window_scaling
> or, if you really want it disabled, configure a larger minimum window size
>  net.ipv4.tcp_rmem = 64240 87380 16777216

Without window scaling, you're limited to 64k window size anyway.

Chris, what is the round trip delay between the machines involved in your 
TCP session?

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se




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