How do I enable zswap on ubuntu?


How can I enable zswap on a ubuntu 14.04 instance? I did some searching and did this:

  1. I modified /etc/default/grub and changed GRUB_CMDLINE_LINUX_DEFAULT to GRUB_CMDLINE_LINUX_DEFAULT="zswap.enabled=1
  2. I then rebooted the system with “reboot”

I then tried to verify the presence of zswap by running “dmesg | grep zcache” but I couldn’t find anything. How do I know if I actually configured it properly and if it’s running?


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GRUB_CMDLINE_LINUX_DEFAULT=“zswap.enabled=1” is not where you enable it. You need to enable it here… GRUB_CMDLINE_LINUX=“zswap.enabled=1” Then run sudo update-grub and then reboot.

After modifying the grub files in /etc, you must run:

sudo update-grub