sysctl

• OpenBSD
• NetBSD

sysctl hw.disknames

Changes to sysctl go in /etc/sysctl.conf.

Once your changes are made, you can reload from all the system files:

sysctl --system

To display all sysctl settings:

sysctl -a

You can set a value directly as well:

sysctl -w net.ipv4.ip_forward=1

• Linux performance tuning – vm.swappiness

In Linux, set the percentage to 10 in /etc/sysctl.conf:

vm.swappiness = 10

Wikipedia references

• vm.swappiness = 0 - swap only to avoid an OOM
• vm.swappiness = 1 - minimum amount of swapping without disabling it completely
• vm.swappiness = 10 - recommended value when sufficient memory exists in a system