System Grab Bag

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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 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 --find --size {{2GB}} --algorithm {{lz4}}
  • List currently initialized devices:
    zramctl

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