tldr/pages/linux/zramctl.md

zramctl

Setup and control zram devices. Use mke2fs or mkswap to format zram devices to partitions.

• Check if zram is enabled:

lsmod | grep -i zram

• Enable zram with 2 devices (use zramctl to configure the devices further):

sudo modprobe zram num_devices={{2}}

• Find and initialise the next free zram device to a 2GB virtual drive using LZ4 compression:

sudo zramctl --find --size {{2GB}} --algorithm {{lz4}}

• List currently initialised devices:

zramctl