Code-Memo

Swap management

Check current swap

swapon --show
free -h
cat /proc/swaps

Create swap file (common approach)

sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile

Persist in /etc/fstab:

/swapfile none swap sw 0 0

Swap partition (alternative)

sudo mkswap /dev/sdb2
sudo swapon /dev/sdb2

Tune swappiness

Current:

cat /proc/sys/vm/swappiness

Temporary:

sudo sysctl vm.swappiness=10

Persistent:

echo "vm.swappiness=10" | sudo tee /etc/sysctl.d/99-swappiness.conf

Notes