Ubuntu zram 开启
sudo apt-get install zram-config

/use/bin/init-zram-swapping


#!/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 / 2 / ${NRDEVICES}) * 1024))

# initialize the devices
for i in $(seq ${NRDEVICES}); do
DEVNUMBER=$((i - 1))
echo $mem > /sys/block/zram${DEVNUMBER}/disksize
zramctl /dev/zram${DEVNUMBER} --algorithm lz4 --streams 8 --size $mem
mkswap /dev/zram${DEVNUMBER}
swapon -p 5 /dev/zram${DEVNUMBER}
done

/etc/sysctl.d/99-vm-zram-parameters.conf

vm.swappiness = 180 vm.watermark_boost_factor = 0 vm.watermark_scale_factor = 125 vm.page-cluster = 0