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| author | Emil Muratov <gpm@hotplug.ru> | 2018-08-02 01:05:14 +0300 |
|---|---|---|
| committer | Jo-Philipp Wich <jo@mein.io> | 2018-12-18 17:22:05 +0100 |
| commit | 24326581281361f0d66f8bd40ac4c598d16fbc4b (patch) | |
| tree | 9093cc68fb53f80da0b00baa8cff6011df96d47b /package/system | |
| parent | 2d4b52707dd6892a1d42a3aced04ebec76cf9b52 (diff) | |
| download | upstream-24326581281361f0d66f8bd40ac4c598d16fbc4b.tar.gz upstream-24326581281361f0d66f8bd40ac4c598d16fbc4b.tar.bz2 upstream-24326581281361f0d66f8bd40ac4c598d16fbc4b.zip | |
zram-swap: Add "max compression streams" configuration option
Config option to limit maximum compression streams per zram dev for
multicore CPU's. This could be defined via 'zram_comp_streams' option in
the 'system' section of '/etc/config/system' file or via cli (for e.x.
with 'uci set system.@System[0].zram_comp_streams=2 && uci commit
system'). Default is number of logical CPU cores.
Signed-off-by: Emil Muratov <gpm@hotplug.ru>
(backported from 70d3ffb47fcef901e4d86da4c9077ba8b8e2ba10)
Diffstat (limited to 'package/system')
| -rwxr-xr-x | package/system/zram-swap/files/zram.init | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/package/system/zram-swap/files/zram.init b/package/system/zram-swap/files/zram.init index 2db986f9a8..9fd4089c6b 100755 --- a/package/system/zram-swap/files/zram.init +++ b/package/system/zram-swap/files/zram.init @@ -93,6 +93,19 @@ zram_comp_algo() fi } +zram_comp_streams() +{ + local dev="$1" + local logical_cpus=$( grep -ci "^processor" /proc/cpuinfo ) + [ $logical_cpus -gt 1 ] || return 1 + local zram_comp_streams="$( uci -q get system.@system[0].zram_comp_streams )" + [ -n "$zram_comp_streams" ] && [ "$zram_comp_streams" -le "$logical_cpus" ] || zram_comp_streams=$logical_cpus + if [ -e /sys/block/$( basename $dev )/max_comp_streams ]; then + logger -s -t zram_comp_streams -p daemon.debug "Set max compression streams to '$zram_comp_streams' for zram '$dev'" + echo $zram_comp_streams > /sys/block/$( basename $dev )/max_comp_streams + fi +} + start() { local zram_size="$( zram_size )" @@ -110,6 +123,7 @@ start() zram_reset "$zram_dev" "enforcing defaults" zram_comp_algo "$zram_dev" + zram_comp_streams "$zram_dev" echo $(( $zram_size * 1024 * 1024 )) >"/sys/block/$( basename "$zram_dev" )/disksize" mkswap "$zram_dev" swapon "$zram_dev" |