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Commit 58ff5075 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

rootdir: init.rc: use default dirty writeout policy 



This patch removed the old writeout policy tune which was never touched since
2009. In the meantime, most of Android devices are equipped with over 4GB DRAM
and very fast flash storages like UFS, which becomes more like desktop or
servers in 2009. So, it'd be worth to go back to use the default kernel configs.

Bug: 129751503
Change-Id: Idb58f5b01bbc4afd270cffba5b8912ea3565819f
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@google.com>
parent fd193bd2

rootdir/init.rc

+6 −5
Original line number Diff line number Diff line
@@ -825,6 +825,11 @@ on zygote-start && property:ro.crypto.state=encrypted && property:ro.crypto.type 
    start zygote

    start zygote_secondary



on boot && property:ro.config.low_ram=true

    # Tweak background writeout

    write /proc/sys/vm/dirty_expire_centisecs 200

    write /proc/sys/vm/dirty_background_ratio  5



on boot

    # basic network init

    ifup lo
@@ -846,11 +851,7 @@ on boot 
    chown root system /sys/block/zram0/writeback

    chmod 0664 /sys/block/zram0/writeback



    # Tweak background writeout

    write /proc/sys/vm/dirty_expire_centisecs 200

    write /proc/sys/vm/dirty_background_ratio  5



    # F2FS tuning. Set cp_interval larger than dirty_expire_centisecs

    # F2FS tuning. Set cp_interval larger than dirty_expire_centisecs, 30 secs,

    # to avoid power consumption when system becomes mostly idle. Be careful

    # to make it too large, since it may bring userdata loss, if they

    # are not aware of using fsync()/sync() to prepare sudden power-cut.