Systemd zRAM service

Use a part of your RAM as compressed swap.

zram is a Linux kernel feature that provides a form of virtual memory compression. zram module increases performance by avoiding paging to disk and using a compressed block device in RAM instead, inside which paging takes place until it is necessary to use the swap space on a hard disk drive. Since using zram is an alternative way to provide swapping on RAM, zram allows Linux to make a better use of RAM when swapping/paging is required, especially on older computers with less RAM installed.

This program provides a systemd service to automatically load and configure such module at system boot.

You can choose compression algorithm by editing systemd service. To see available algorithms do cat /sys/block/zram0/comp_algorithm.

Installation

You can choose between different installation methods. Note that uninstallation don't removes active zram disk.

Classic method

• Build and install:

  $ make
  # make install

• Uninstall:

  # make uninstall

Debian package

• Build and install:

  $ make debian_pkg
  # dpkg -i systemd-zram_*.deb

• Uninstall:

  # apt purge systemd-zram

Arch Linux package

• Build and install:

  $ make arch_pkg
  # pacman -U systemd-zram-*.pkg.tar.xz

Alternatively you can install it from AUR:

    $ trizen -S systemd-zram

• Uninstall:

  # pacman -Rsc systemd-zram

Usage

To start the service execute as root:

    # systemctl start systemd-zram

To stop it:

    # systemctl stop systemd-zram

If you want to enable zram at boot, just run as root:

    # systemctl enable systemd-zram

And for disable it at boot:

    # systemctl disable systemd-zram