# Prefer to recompress only huge pages. This will result in additional memory
# savings, but may slightly increase CPU load due to additional compression
# overhead.
ACTION=="add", KERNEL=="zram[0-9]*", ATTR{recomp_algorithm}="algo=lz4 priority=1", \
  RUN+="/sbin/sh -c echo 'type=huge' > /sys/block/%k/recompress"

TEST!="/dev/zram0", GOTO="zram_end"

# Since ZRAM stores all pages in compressed form in RAM, we should prefer
# preempting anonymous pages more than a page (file) cache.  Preempting file
# pages may not be desirable because a process may want to access a file at any
# time, whereas if it is preempted, it will cause an additional read cycle from
# the disk.
SYSCTL{vm.swappiness}="150"

# Optimal value for games, so sets not too aggressive, but also not too weak
# kswapd behavior, as described there:
# https://www.reddit.com/r/linux_gaming/comments/vla9gd/comment/ie1cnrh/
SYSCTL{vm.watermark_scale_factor}="125"
SYSCTL{vm.watermark_boost_factor}="0"

LABEL="zram_end"