On (24/12/07 04:16), LiviaMedeiros wrote: > From: LiviaMedeiros <livia@xxxxxxxxxx> > > Add support for configuring the default ZSTD compression level for zram > devices via the CONFIG_ZRAM_DEFAULT_ZSTD_LEVEL configuration option. > If this option is not set, fallback to zstd_default_clevel() is used. Please let's not. Then somebody will need options to .config c/d dicts for zstd/lz4/lz4hc, acceleration levels for lz4, compression level for deflate and so on and on and on. [..] > I also failed to make something like `echo "algo=zstd level=9" > > /sys/block/zram3/algorithm_params` work in runtime, but I assume I'm just > dumb and/or it requires extra steps. This should work, but you need to configure algo params before you init zram device (that is _before_ write to disksize device attr). E.g. % modprobe zram % echo zstd > /sys/block/zram0/comp_algorithm % echo "algo=zstd level=9 dict=/etc/zstd-dict-amd64" > /sys/block/zram0/algorithm_params % echo 1G > /sys/block/zram0/disksize
