Swap
From Wasya Wiki
swapoff /swapfile sudo fallocate -l 4G /swapfile sudo dd if=/dev/zero of=/swapfile bs=1024 count=4194304 sudo chmod 600 /swapfile sudo mkswap /swapfile sudo swapon /swapfile
# /etc/fstab /swapfile swap swap defaults 0 0
sudo swapon --show sudo free -h
cat /proc/sys/vm/swappiness sudo sysctl vm.swappiness=10
sudo swapoff -v /swapfile # and remove the entry from /etc/fstab sudo rm /swapfile