Tuning the Server

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Revision as of 16:24, 14 December 2021 by Ajay (talk | contribs)
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Increase ulimit

ulimit -n 65535

Sysctl

Increase the ports available

sysctl -w net.ipv4.ip_local_port_range="9000 65500"

And add this line to /etc/sysctl.conf

net.ipv4.ip_local_port_range=9000 65500

Increase max connections

sysctl -w net.core.somaxconn=324000

And add this line to /etc/sysctl.conf

net.core.somaxconn=324000
More limits
net.ipv4.tcp_max_syn_backlog=3240000
net.core.netdev_max_backlog=70000
net.ipv4.tcp_max_orphans=70000

Security limits

Add these lines to /etc/security/limits.conf

*               soft    nofile          65535
*               hard    nofile          65535