Using zRAM on Deepin system
1. Save this as debian-install-zram.sh:
sudo su
/etc/init.d/zram start|stop
#!/bin/bash # | |
not_root() { | |
echo "ERROR: You have to be root to execute this script" | |
exit 1 | |
} | |
zram_exists() { | |
echo "ERROR: /etc/init.d/zram already exists" | |
exit 1 | |
} | |
# Check if user is root | |
[ $EUID != 0 ] && not_root | |
# Check if zram file already exists | |
[ -f /etc/init.d/zram ] && zram_exists | |
cat >/etc/init.d/zram <<EOL | |
#!/bin/sh | |
### BEGIN INIT INFO | |
# Provides: zram | |
# Required-Start: $local_fs | |
# Required-Stop: $local_fs | |
# Default-Start: S | |
# Default-Stop: 0 1 6 | |
# Short-Description: Use compressed RAM as in-memory swap | |
# Description: Use compressed RAM as in-memory swap | |
### END INIT INFO | |
# Author: Antonio Galea <antonio.galea@gmail.com> | |
# Thanks to Przemysław Tomczyk for suggesting swapoff parallelization | |
FRACTION=75 | |
MEMORY=\`perl -ne'/^MemTotal:\s+(\d+)/ && print \$1*1024;' < /proc/meminfo\` | |
CPUS=\`grep -c processor /proc/cpuinfo\` | |
SIZE=\$(( MEMORY * FRACTION / 100 / CPUS )) | |
case "\$1" in | |
"start") | |
param=\`modinfo zram|grep num_devices|cut -f2 -d:|tr -d ' '\` | |
modprobe zram \$param=\$CPUS | |
for n in \`seq \$CPUS\`; do | |
i=\$((n - 1)) | |
echo \$SIZE > /sys/block/zram\$i/disksize | |
mkswap /dev/zram\$i | |
swapon /dev/zram\$i -p 10 | |
done | |
;; | |
"stop") | |
for n in \`seq \$CPUS\`; do | |
i=$((n - 1)) | |
swapoff /dev/zram\$i && echo "disabled disk \$n of \$CPUS" & | |
done | |
wait | |
sleep .5 | |
modprobe -r zram | |
;; | |
*) | |
echo "Usage: \`basename \$0\` (start | stop)" | |
exit 1 | |
;; | |
esac | |
EOL | |
chmod +x /etc/init.d/zram | |
insserv zram | |
/etc/init.d/zram start | |
exit 0 |
2. Run these commands:
sudo su
. debian-install-zram.sh
3. Check it out:
cat /proc/swaps
4. Usage:
/etc/init.d/zram start|stop
Copy from https://gist.github.com/Zerogiven/5a2fcfd6aeda2fe3eb9b
For Ubuntu:
sudo apt install zram-config
reboot
cat /proc/swaps
For Ubuntu:
sudo apt install zram-config
reboot
cat /proc/swaps