Pinebook Pro Setting Up Zram

ZRAM is essentially compressed memory. Your system uses some of it's CPU cycles to compress redundant data into a reserved area of your ram. Think of it as swap space, but without writing to your drive. I've tested this on both Manjaro Arm and Archlinux Arm.

$ insmod | grep zram

Output: zram    ????? ?

If you get similar results, zram should be supported.

sudo modprobe zram && sudo zramctl -a lzo-rle -s 12G zram0

Here we are choosing the compression algorithm and size of the zram device. Next we tell our system to use it as swap.

sudo mkswap /dev/zram0 && sudo swapon /dev/zram0

We should be good to go. Here's how you can verify zram is being used.

free -h

total        used        free      shared  buff/cache   available
Mem:         3.7Gi       429Mi     2.7Gi        30Mi       562Mi
Swap:        11Gi          0B        11Gi