Linux network optimization

After the Linux system is installed, the default TCPmemory parameter is set to 128 kB. when too many processes communicate over the network, exceptions may occur. You can use the command to expand memory usage: www.2cto.com # sysctl-wnet.core.rmem_max16777216 # sysctl-wnet.core.wmem_m...

After the Linux system is installed, the default TCP memory parameter is set to 128 kB. when too many processes communicate over the network, exceptions may occur.
You can use the command to expand the memory usage: www.2cto.com
# Sysctl-w net. core. rmem_max = 16777216
# Sysctl-w net. core. wmem_max = 16777216
# Change to 16 MB
It is best to modify the/etc/sysctl. conf file at the same time to ensure the normal operation of the system:
# These ensure that TIME_WAIT ports either get reused or closed fast.
Net. ipv4.tcp _ fin_timeout = 1
Net. ipv4.tcp _ tw_recycle = 1
# TCP memory
Net. core. rmem_max = 16777216
Net. core. rmem_default = 16777216
Net. core. netdev_max_backlog = 262144
Net. core. somaxconn = 262144

From: Black nest