Swapfile (Optional)

Setting up swapfile is optional, but recommended, in case if the core happens to take more than 1 GB of memory. This helps to avoid crashing core unintended.

sudo swapoff -a

sudo fallocate -l 5G /swapfile #5GB of swapfile

sudo chmod 600 /swapfile

sudo mkswap /swapfile

sudo swapon /swapfile

echo "/swapfile swap swap defaults 0 0" >> /etc/fstab