James A. Peltier wrote: > >> I am using this on my CentOS 4 machine. I would expect it to work on >> a CentOS 5 machine as well. >> >> Add the following to /etc/sysctl.conf >> >> net.core.rmem_default = 67108864 >> net.core.wmem_default = 67108864 >> net.core.rmem_max = 67108864 >> net.core.wmem_max = 67108864 >> net.ipv4.tcp_mem = 4096 67108864 67108864 >> net.ipv4.tcp_rmem = 4096 67108864 67108864 >> net.ipv4.tcp_wmem = 4096 67108864 67108864 >> >> Run sysctl -p >> >> Barry > > You may want to consider adding QoS to ACKs. Giving ACKs higher > priority will allow you to better utilize the link by ensuring they > don't get overrun with other traffic. I do this on my OpenBSD firewall > with great success. How can I do this in CentOS 5.0?