Configure Debian TCP/IP for performance

[envygeeks]

High Performance sites and even low performance sites will notice a significant performance boost on Debian if they configure their TCP/IP.

echo 0  >/proc/sys/net/ipv4/tcp_sack 
echo 0  >/proc/sys/net/ipv4/tcp_timestamps
echo 0  >/proc/sys/net/ipv4/tcp_window_scaling
echo 1800 >/proc/sys/net/ipv4/tcp_keepalive_time
echo 30 >/proc/sys/net/ipv4/tcp_fin_timeout

If you want to make the changes permanent:

vim /etc/sysctl.conf

net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 1800
net.ipv4.tcp_window_scaling = 0
net.ipv4.tcp_sack = 0
net.ipv4.tcp_timestamps = 0

/etc/init.d/network restart

And yes you can reset your network while you are connected to SSH without losing the connection .

[nullmind]

Very cool stuff

[webicero]

Cool Stuff. I am going to get another node soon and play around with Debian.

[Ditlev]

same for ubuntu?

[envygeeks]

The latter works on Ubuntu (actually all Linux distros), via manual editing of /etc/sysctl.conf because those are Kernel features. The first should work on Ubuntu, it does on my intrepid build, but for a stable build I would just use /etc/sysctl.conf and do /etc/init.d/networking restart.