Optimize network performance on gentoo using a gigabit network adapter and sysctl.
BEFORE:
>> sysctl net.core.wmem_max
net.core.wmem_max = 131071
>> sysctl net.core.wmem_default
net.core.wmem_default = 101376
>> sysctl net.ipv4.tcp_window_scaling
net.ipv4.tcp_window_scaling = 1
>> sysctl net.ipv4.tcp_mem
net.ipv4.tcp_mem = 98304 131072 196608
>> sysctl net.core.rmem_max
net.core.rmem_max = 131071
>> sysctl net.core.rmem_default
net.core.rmem_default = 101376
AFTER:
>> sysctl net.core.wmem_max=8388608
net.core.wmem_max = 8388608
>> sysctl net.core.wmem_default=65536
net.core.wmem_default = 65536
>> sysctl net.core.rmem_max=8388608
net.core.rmem_max = 8388608
>> sysctl net.core.rmem_default=65536
net.core.rmem_default = 65536