Newer
Older
#!/bin/sh
# load dependency modules
NRDEVICES=$(grep -c ^processor /proc/cpuinfo | sed 's/^0$/1/')
if modinfo zram | grep -q ' zram_num_devices:' 2>/dev/null; then
MODPROBE_ARGS="zram_num_devices=${NRDEVICES}"
elif modinfo zram | grep -q ' num_devices:' 2>/dev/null; then
MODPROBE_ARGS="num_devices=${NRDEVICES}"
else
exit 1
fi
modprobe zram $MODPROBE_ARGS
# Calculate memory to use for zram (1/2 of ram)
totalmem=`LC_ALL=C free | grep -e "^Mem:" | sed -e 's/^Mem: *//' -e 's/ *.*//'`
mem=$((((totalmem - 102400 )/ ${NRDEVICES}) * 1024))
# initialize the devices
for i in $(seq ${NRDEVICES}); do
DEVNUMBER=$((i - 1))
echo $mem > /sys/block/zram${DEVNUMBER}/disksize
mkswap /dev/zram${DEVNUMBER}
swapon -p 5 /dev/zram${DEVNUMBER}
done