...
# OS swaping behavior. vm.swappiness = 0 mean no swaping
vm.swappiness = 0
# kernel behavior with regard to the dirty pages
...
# Maximum number of shared memory segments in pages
kernel.shmall = $shmall
Security related settings
...
net.ipv4.tcp_timestamps = 1
Limits configuration( /etc/security/limits.conf )
* hard nofile 125000
* soft nofile 125000
root hard nofile 400000
root soft nofile 400000