Create New SWAP

Step 1: Deactivate and Remove SWAP if there is one already

Step 2: Remove SWAP file

$ rm -r /swapfile

Step 3:

$ dd if=/dev/zero of=/swap bs=1024 count=1024k

$ mkswap /swap

$ chmod 600 /swap

$ chown root:root /swap

$ swapon /swap

$ echo "10" > /proc/sys/vm/swappiness

$ echo "vm.swappiness = 10" >> /etc/sysctl.conf

$ echo "/swap none swap sw 0 0 " >> /etc/fstab #Danger: check if the swap file is alread in fstab before doing this

Increase the SWAP file

Step 1: Deactivate SWAP

$ sudo swapoff -a

Step 2: Increase the size of the swap file, here for 16GB for example:

$ sudo dd if=/dev/zero of=/swapfile bs=1G count=16

Step 3: Make the SWAP file and turn on SWAP

$ sudo mkswap /swapfile

$ sudo swapon /swapfile

Step 4: To check the current SWAP size

$ grep SwapTotal /proc/meminfo

Removing SWAP file

Step 1: Deactivate SWAP

$ sudo swapoff -v /swapfile

or

$ sudo swapoff -a

Step 2: Remove swap file entry from /etc/fstab

/swapfile swap swap defaults 0 0

Step 3: Remove or Delete the actual swap file

$ sudo rm /swapfile