Linux/Swap

Enable swap

swapon --show
fallocate -l 1G /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile
swapon --show

echo '/swapfile none swap sw 0 0' | tee -a /etc/fstab

Tune swap for servers

参考资料

/etc/sysctl.conf

vm.swappiness=10 # or 0
vm.vfs_cache_pressure = 50