#swap #https://linuxize.com/post/how-to-add-swap-space-on-debian-9/ fallocate -l 1G /swapfile chmod 600 /swapfile mkswap /swapfile swapon /swapfile sysctl vm.swappiness=20 nano /etc/fstab /swapfile swap swap defaults 0 0 nano /etc/sysctl.conf => vm.swappiness=10 sysctl vm.vfs_cache_pressure=50 nano /etc/sysctl.conf => vm.vfs_cache_pressure=50