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Commit bde89da5 authored by James Hawkins's avatar James Hawkins Committed by Gerrit Code Review
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Merge "bootstat: Fix false metrics due to soft reboots."

parents 4c5c9db1 800ceb45
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+19 −1
Original line number Diff line number Diff line
@@ -11,8 +11,26 @@ on post-fs-data
on post-fs-data && property:init.svc.bootanim=running
    exec - root root -- /system/bin/bootstat -r post_decrypt_time_elapsed

# sys.logbootcomplete is a signal to enable the bootstat logging mechanism.
# This signaling is necessary to prevent logging boot metrics after a soft
# reboot (e.g., adb shell stop && adb shell start).  /proc/uptime is not reset
# during a soft reboot, which leads to false boot time metrics being reported.
#
# The 'on boot' event occurs once per hard boot (device power on), which
# switches the flag on. If the device performs a soft reboot, the flag is
# switched off and cannot be switched on until the device hard boots again.

# Enable bootstat logging on boot.
on boot
    setprop sys.logbootcomplete 1

# Disable further bootstat logging on a soft reboot. A soft reboot is
# signaled by the zygote stopping.
on property:init.svc.zygote=stopping
    setprop sys.logbootcomplete 0

# Record boot complete metrics.
on property:sys.boot_completed=1
on property:sys.boot_completed=1 && property:sys.logbootcomplete=1
    # Record boot_complete and related stats (decryption, etc).
    exec - root root -- /system/bin/bootstat --record_boot_complete