pe-devices/device_xiaomi_sm6250-common
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sm6250-common: tune zram performance

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-Switch to LZ4 for better overall performance
-Set max_comp_streams to num of cores since upstream also moves this to
percpu.
-Set page-cluster to 0 as the incremental cost of reading 1 page at a
time is negligible for zram

Bug: 38249616
Test: boot and run zram-perf showing better performance
Change-Id: I0b92b246d773db85aa03d033b2cecee54347cbd1
This commit is contained in:
Wei Wang 2017-05-17 15:27:32 -07:00 committed by Nick C
parent 09d22a08db
commit f51fc562c4
2 changed files with 5 additions and 1 deletions
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2
rootdir/etc/fstab.qcom
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@ -52,4 +52,4 @@ vendor /vendor
# The update_engine code looks for this entry in order to determine the boot device address # The update_engine code looks for this entry in order to determine the boot device address
# and fails if it does not find it. # and fails if it does not find it.
/dev/block/bootdevice/by-name/misc /misc emmc defaults defaults /dev/block/bootdevice/by-name/misc /misc emmc defaults defaults
/dev/block/zram0 none swap defaults zramsize=1073741824 /dev/block/zram0 none swap defaults zramsize=1073741824,max_comp_streams=8

4
rootdir/etc/init.target.rc
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@ -75,6 +75,10 @@ on init
wait /dev/block/platform/soc/${ro.boot.bootdevice} wait /dev/block/platform/soc/${ro.boot.bootdevice}
symlink /dev/block/platform/soc/${ro.boot.bootdevice} /dev/block/bootdevice symlink /dev/block/platform/soc/${ro.boot.bootdevice} /dev/block/bootdevice
# ZRAM setup
write /sys/block/zram0/comp_algorithm lz4
write /proc/sys/vm/page-cluster 0
on early-fs on early-fs
start vold start vold