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

  • Check if zram is enabled:

lsmod | grep -i 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 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: