adb shell bugreport分析

BugReport格式分析

BugReport设置

bugreport本身并没有什么选项，主要是通过dumpsys等命令配合完成：
1. 重置电池统计信息

adb shell dumpsys batterystats --reset  

2. Wakelock analysis全部wakelock信息

adb shell dumpsys batterystats --enable full-wake-history

3. Kernel trace analysis分析内核，主要分析wakeup source和wakeup activities，首先使能kernel分析

$ adb shell

# Set the events to trace.
$ echo "power:wakeup_source_activate" >> /d/tracing/set_event
$ echo "power:wakeup_source_deactivate" >> /d/tracing/set_event

# The default trace size for most devices is 1MB, which is relatively low and might cause   the logs to overflow.
# 8MB to 10MB should be a decent size for 5-6 hours of logging.

$ echo 8192 > /d/tracing/buffer_size_kb

$ echo 1 > /d/tracing/tracing_on

然后获得log

$ echo 0 > /d/tracing/tracing_on
$ adb pull /d/tracing/trace 

# Take a bug report at this time.
$ adb bugreport > bugreport.txt

BugReport内容

Battery History

1. bugreport记录以下信息

Brightness
CPU running
Charging on
Charging status
Health
JobScheduler
Kernel only uptime
Level
Package active
Partial wakelock
Phone scanning
Phone state
Plug
Plugged
Screen
Temperature
Top app
Voltage
Wifi on
Wifi running
Wifi supplicant

2. 总括信息

Battery History (15% used, 40KB used of 256KB, 240 strings using 15KB):

                0 (9) RESET:TIME: 2016-08-23-10-41-35

                0 (3) 031 status=discharging health=good plug=none temp=310 volt=7392   +running

40KB used of 256KB 256KB缓存用了40KB

3. 时间轴

    +14m02s086ms (2) 030 +wake_lock=1000:"WifiSuspend"

    +14m02s095ms (1) 030 -wake_lock

+14m02s086ms自RESET TIME经历时间
030当前电量百分比
+wake_lockwake_lock开始
-wake_lockwake_lock结束

temp=330 volt=7414  

temp温度
volt电压

current=-861

current为当前电流，+为充电，-为放电

Per-PID Stats

PID 3270 wake time: +1ms

PID 0 wake time: +847ms

某个PID获取电源锁的时间

Discharge step durat

#0: +41m55s146ms to 31 (power-save-off)

#1: +2m40s252ms to 32 (screen-on, power-save-off, device-idle-off)

#2: +3m20s224ms to 34 (power-save-off, device-idle-off)

#3: +2m40s495ms to 35 (screen-on, power-save-off, device-idle-off)

#1: +2m40s252ms to 32从33放电到32经历时间为2m40s252ms，括号内为简单耗电原因

Daily Stats

Daily stats:

    Current start time: 2016-08-23-11-08-25

    Next min deadline: 2016-08-24-01-00-00

    Next max deadline: 2016-08-24-03-00-00

    Current daily discharge step durations:

    #0: +41m55s146ms to 31 (power-save-off)

    #1: +2m40s252ms to 32 (screen-on, power-save-off, device-idle-off)

    #2: +3m20s224ms to 34 (power-save-off, device-idle-off)

按天统计放电过程

Package changes:

    Update com.tencent.mobileqq vers=398

    Update com.jingdong.app.mall vers=34669

    Update com.tencent.mm vers=840

    Update com.sdu.didi.psnger vers=150

    Update com.qzone vers=94

发生改变的package

Statistics since last charge

System starts: 5, currently on battery: false

Time on battery: 4h 50m 51s 103ms (62.2%) realtime, 2h 10m 39s 764ms (27.9%) uptime

Time on battery screen off: 3h 9m 1s 524ms (40.4%) realtime, 28m 50s 181ms (6.2%) uptime

Total run time: 7h 47m 49s 583ms realtime, 5h 7m 38s 242ms uptime

Start clock time: 2016-08-23-10-41-27

Screen on: 1h 41m 49s 579ms (35.0%) 38x, Interactive: 1h 41m 41s 490ms (35.0%)

Screen brightnesses:

    dark 42m 58s 386ms (42.2%)

    dim 58m 43s 967ms (57.7%)

    light 6s 398ms (0.1%)

    bright 819ms (0.0%)

Device idling: 1h 50m 43s 273ms (38.1%) 7x

自从上次充电到现在为止的各类统计，看名字可知意义。

Estimated power use (mAh)

    Capacity: 3900, Computed drain: 1565, actual drain: 819-1053

    Uid 1000: 338 ( cpu=334 wake=2.32 wifi=0.764 sensor=0.522 )

    Screen: 304

    Uid 0: 212 ( cpu=212 wifi=0.00877 )

    Uid u0a112: 35.5 ( cpu=35.4 wifi=0.00295 sensor=0.00000125 )

    Uid u0a101: 32.7 ( cpu=26.8 wifi=4.60 sensor=1.28 )

    Uid u0a100: 28.1 ( cpu=27.1 wake=0.913 wifi=0.00639 )

Capacity: 3900, Computed drain: 1565...头部为电池的整体信息
Uid u0a112: 根据uid统计电量消耗

All kernel wake locks

  Kernel Wake lock wlan_rx_wake: 11m 4s 92ms (319 times) realtime

  Kernel Wake lock wlan_wd_wake: 8m 51s 176ms (1432 times) realtime

  Kernel Wake lock mmc1_detect : 2m 34s 710ms (482 times) realtime

kernel wake lock获取者信息、时长及次数

All partial wake locks

  Wake lock 1000 eventloop: 1m 53s 858ms (92 times) realtime

  Wake lock 1000 dispatcher: 29s 367ms (39 times) realtime

  Wake lock u0a100 WakerLock:25822454: 21s 879ms (29 times) realtime

partial wake lock信息

All wakeup reasons

Wakeup reason unknown: 4m 36s 753ms (150 times) realtime

Wakeup reason Abort:Last active Wakeup Source: wlan_wd_wake: 1m 6s 628ms (32 times) realtime

Wakeup reason Abort:Last active Wakeup Source: ARD: 53s 17ms (25 times) realtime

系统唤醒原因

更加UID统计相关信息

1001:

    Wake lock ServiceStateTracker realtime

    Wake lock CallerInfoCache realtime

    Wake lock RADIOPOWERDOWN_IFNOCARD_WAKELOCK: 14s 321ms partial (3 times) realtime

    Wake lock SERVICESTATE_WAIT_DISCONNECT_WAKELOCK realtime

    ...
    TOTAL wake: 17s 288ms partial realtime

    Foreground activities: 2s 36ms realtime (2 times)

    Foreground for: 4h 50m 34s 89ms 

    Active for: 4h 50m 36s 257ms 

    Running for: 4h 50m 36s 264ms
    ...
    Total cpu time: u=1m 12s 192ms s=48s 219ms p=0mAh

    Proc com.huawei.skytone:

        CPU: 80ms usr + 30ms krn ; 0ms fg

        28 starts

    Proc com.android.phone:

        CPU: 39s 770ms usr + 21s 950ms krn ; 0ms fg

        8 starts
    ...
    Apk com.huawei.ims:

        Service com.huawei.ims.ImsService:

            Created for: 2h 10m 4s 956ms uptime

            Starts: 5, launches: 5

    Apk com.android.phone:

        Service com.android.phone.TelephonyDebugService:

            Created for: 2h 10m 4s 945ms uptime

            Starts: 5, launches: 5 

TOTAL wakewake lock信息
Total cpucpu信息
Proc ...进入Proc信息
Apk ... ……待分析…….