#!/bin/bash

modprobe lz4
# add other modprobe lines here related to lz4

echo "zsmalloc" > /sys/module/zswap/parameters/zpool
echo "75" > /sys/module/zswap/parameters/max_pool_percent
echo "lz4" > /sys/module/zswap/parameters/compressor
echo "1" > /sys/module/zswap/parameters/enabled

echo "100" > /proc/sys/vm/swappiness

swapon /path/to/your/hdd/swapfile