tldr/pages/linux/zramctl.md

zramctl

Setup and control zram devices. Use mkfs or mkswap to format zram devices to partitions. More information: https://manned.org/zramctl.

• Check if zram is enabled:

lsmod | grep {{[-i|--ignore-case]}} zram

• Enable zram with a dynamic number of devices (use zramctl to configure devices further):

sudo modprobe zram

• Enable zram with exactly 2 devices:

sudo modprobe zram num_devices={{2}}

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

sudo zramctl {{[-f|--find]}} {{[-s|--size]}} {{2GB}} {{[-a|--algorithm]}} {{lz4}}

• List currently initialized devices:

sudo zramctl