| Brad Bishop | 63ae878 | 2019-10-09 09:56:13 -0400 | [diff] [blame^] | 1 | #!/bin/sh |
| 2 | set -e |
| 3 | |
| 4 | device=$1 |
| 5 | if [ "$device" = "" ]; then |
| 6 | echo "Usage: zram-swap-init <device>" |
| 7 | exit 1 |
| 8 | fi |
| 9 | |
| 10 | # Allocate zram to be size of actual system memory |
| 11 | # Note: zram is only allocated when used. When swapped pages compress with a |
| 12 | # a 2:1 ratio zram will require 50% of system memory (while allowing to use |
| 13 | # 150% memory). |
| 14 | ZRAM_SIZE_PERCENT=100 |
| 15 | ZRAM_ALGORITHM=lz4 |
| 16 | |
| 17 | [ -f /etc/default/zram ] && ./etc/default/zram || true |
| 18 | |
| 19 | memtotal=$(grep MemTotal /proc/meminfo | awk ' { print $2 } ') |
| 20 | memzram=$(($memtotal*${ZRAM_SIZE_PERCENT}/100)) |
| 21 | |
| 22 | # Try loading zram module |
| 23 | modprobe -q zram || true |
| 24 | |
| 25 | zramctl -a ${ZRAM_ALGORITHM} -s ${memzram}KB $device |
| 26 | mkswap -L "zram-swap" $device |