How to Create zRam on Linux

Put these on the terminal

sudo modprobe zram

and then

sudo sh -c "echo 'lz4' > /sys/block/zram0/comp_algorithm"

You can change it what you want
2G or 4G

sudo sh -c "echo '2G' > /sys/block/zram0/disksize"

sudo mkswap --label zram0 /dev/zram0

sudo swapon --priority 100 /dev/zram0

Turne on Automatically zRam swap on the startup

sudo nano /etc/systemd/system/zram.service

put this scripts

[Unit]
Description=zRam block devices swapping

[Service]
Type=oneshot
ExecStart=/usr/bin/bash -c "modprobe zram && echo lz4 > /sys/block/zram0/comp_algorithm | echo 2G > /sys/block/zram0/disksize && mkswap --label zram0 /dev/zram0 && swapon --priority 100 /dev/zram0"
ExecStop=/usr/bin/bash -c "swapoff /dev/zram0 && rmmod zram"
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target

and saved it


sudo systemctl enable zram

Disable zRam block devices

Disable the zRam block devices swapping

sudo swapoff /dev/zram0

Remove the zRam module from the kernel

sudo rmmod zram

 Disable the zram.service from automatically run at startup

sudo systemctl disable zram.service