ZRAM

Compressed RAM-backed swap. Faster than disk swap, reduces I/O.

Installation

sudo apt install systemd-zram-generator

Configuration

[zram0]
zram-size = ram / 2
compression-algorithm = zstd

Service

sudo systemctl enable --now systemd-zram-setup@zram0

Verify

zramctl
swapon --show

Teardown

sudo swapoff /dev/zram0
sudo zramctl -r /dev/zram0