#!/bin/sh

num_cpus=$(grep -c processor /proc/cpuinfo)
[ "$num_cpus" != 0 ] || num_cpus=1

last_cpu=$((num_cpus - 1))
FACTOR=90
[ -f /etc/default/zram ] && source /etc/default/zram || true
factor=$FACTOR # percentage

memtotal=$(grep MemTotal /proc/meminfo | awk ' { print $2 } ')
mem_by_cpu=$(($memtotal/$num_cpus*$factor/100*1024))

modprobe -q zram num_devices=$num_cpus

for i in $(seq 0 $last_cpu); do
	echo $mem_by_cpu > /sys/block/zram$i/disksize
	mkswap /dev/zram$i
	swapon -p 100 /dev/zram$i
done