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Commit 9e09cbce authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

rootdir: init.rc to limit discard size to 128MB 



In any case, UFS storage suffers from long discard latency.

Bug: 148209614
Change-Id: Iaa8ef6eb862934af43254bd10873a12c3d34e926
Merged-In: Iaa8ef6eb862934af43254bd10873a12c3d34e926
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@google.com>
parent 81303e4c

rootdir/init.rc

+5 −0
Original line number Diff line number Diff line
@@ -682,6 +682,11 @@ on boot 
    write /sys/fs/f2fs/${dev.mnt.blk.data}/cp_interval 200

    write /sys/fs/f2fs/${dev.mnt.blk.data}/gc_urgent_sleep_time 50



    # limit discard size to 128MB in order to avoid long IO latency

    # for filesystem tuning first (dm or sda)

    # Note that, if dm-<num> is used, sda/mmcblk0 should be tuned in vendor/init.rc

    write /sys/devices/virtual/block/${dev.mnt.blk.data}/queue/discard_max_bytes 134217728



    # Permissions for System Server and daemons.

    chown radio system /sys/android_power/state

    chown radio system /sys/android_power/request_state