- Turn off all swap processes
sudo swapoff -a
- Resize the swap to be 8GB for example
sudo dd if=/dev/zero of=/swapfile bs=1M count=8192
For 4GB will have to be 4086
if = input file
of = output file
bs = block size
count = multiplier of blocks
- Change permission
sudo chmod 600 /swapfile
- Make the file usable as swap
sudo mkswap /swapfile
- Activate the swap file
sudo swapon /swapfile
- Edit /etc/fstab and add the new swapfile entry if it isn’t already there
/swapfile none swap sw 0 0
- Check the amount of swap available:
grep SwapTotal /proc/meminfo