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- #!/bin/sh
- set -e
- device=$1
- if [ "$device" = "" ]; then
- echo "Usage: zram-swap-init <device>"
- exit 1
- fi
- # Allocate zram to be size of actual system memory
- # Note: zram is only allocated when used. When swapped pages compress with a
- # a 2:1 ratio zram will require 50% of system memory (while allowing to use
- # 150% memory).
- ZRAM_SIZE_PERCENT=100
- ZRAM_ALGORITHM=lz4
- [ -f /etc/default/zram ] && ./etc/default/zram || true
- memtotal=$(grep MemTotal /proc/meminfo | awk ' { print $2 } ')
- memzram=$(($memtotal*${ZRAM_SIZE_PERCENT}/100))
- # Try loading zram module
- modprobe -q zram || true
- zramctl -a ${ZRAM_ALGORITHM} -s ${memzram}KB $device
- mkswap -L "zram-swap" $device
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