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authorEmil Muratov <gpm@hotplug.ru>2018-08-02 01:05:14 +0300
committerJo-Philipp Wich <jo@mein.io>2018-12-18 17:22:05 +0100
commit24326581281361f0d66f8bd40ac4c598d16fbc4b (patch)
tree9093cc68fb53f80da0b00baa8cff6011df96d47b /package/system/zram-swap
parent2d4b52707dd6892a1d42a3aced04ebec76cf9b52 (diff)
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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/zram-swap')
-rwxr-xr-xpackage/system/zram-swap/files/zram.init14
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"