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Do silent zram switch from lzo to lzo-rle if available

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Available with kernel 5.1 or above, made for ARM and being the new default. So switch silently from lzo to lzo-rle if possible to benefit from better performance:

https://www.phoronix.com/scan.php?page=news_item&px=ZRAM-Linux-5.1-Better-Perform
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Thomas Kaiser 2020-06-29 08:41:56 +02:00 • committed by GitHub
parent dc1b17aeac
commit 99591837e3
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1 changed files with 7 additions and 1 deletions
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8
packages/bsp/common/usr/lib/armbian/armbian-zram-config
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@ -52,7 +52,13 @@ activate_zram_swap() {
swap_algo=${SWAP_ALGORITHM:=lzo}
for (( i=1; i<=zram_devices; i++ )); do
[[ -f /sys/block/zram${i}/comp_algorithm ]] && echo ${swap_algo} >/sys/block/zram${i}/comp_algorithm 2>/dev/null
if [ -f /sys/block/zram${i}/comp_algorithm ]; then
# set compression algorithm, if defined as lzo choose lzo-rle if available
# https://www.phoronix.com/scan.php?page=news_item&px=ZRAM-Linux-5.1-Better-Perform
grep -q 'lzo-rle' /sys/block/zram${i}/comp_algorithm && \
[[ "X${swap_algo}" = "Xlzo" ]] && swap_algo="lzo-rle"
echo ${swap_algo} >/sys/block/zram${i}/comp_algorithm 2>/dev/null
fi
if [ "X${ZRAM_BACKING_DEV}" != "X" ]; then
echo ${ZRAM_BACKING_DEV} >/sys/block/zram${i}/backing_dev
fi