20180828 BugReport WifFi 信号差导致的功耗大现象

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1.WifFi 信号差导致的功耗大现象

2018-08-21 18:28:38 - 00:48:13,期间 6 小时 20 分钟内耗电 100% - 87%，存在大功耗问题

WifFi 信号差导致的功耗大现象

2. 功耗异常原因

2.1. WiFi 信号强度差，需要不断改变功率，导致CPU的不断唤醒

具体唤醒如下

 Kernel Wakeup Reasons:
Show  entriesSearch:
Ranking Name    Duration / Hr   Count / Hr  Total Duration  Total Count Show Count vs Time
0   unknown 22m50s941ms 1697.20 6h32m14.3s  29135   
1   Abort:Pending Wakeup Sources: WLAN AHB ISR  8m10s819ms  914.69  2h20m25.655s    15702   
2   Abort:Pending Wakeup Sources: WLAN TX THREAD WLAN AHB ISR   2m37s602ms  285.38  45m5.493s   4899    
3   Abort:Last active Wakeup Source: WLAN AHB ISR   2m13s379ms  240.53  38m9.668s   4129    
4   Abort:Last active Wakeup Source: pmicAuxadc irq wakelock    40s609ms    70.25   11m37.124s  1206

2.2. 手机信号强度同样也不尽如人意

moderate 持续了 6h 19m 32s 365ms

Mobile signal strength
Aug 21 2018
18:28:41 - 00:48:13
+49m07s376ms to +7h08m39s741ms
active duration: 6h 19m 32s 365ms
1 occurencesMobile signal strength | Number of times | Total duration  
moderate               | 1               | 6h 19m 32s 365ms

2.3. 待机模块下JobScheduler 唤醒时段

2.3.1 com.android.bankabc 农行掌上银行

19:56:51 - 20:01:06 唤醒达到 50次，唤醒过度异常

JobScheduler
Aug 21 2018
19:56:51 - 20:01:06
+2h17m17s520ms to +2h21m32s482ms
active duration: 6s 609ms
50 occurencesJobScheduler                                              | Number of times | Total duration | Actual event times                                                                                                                                                                             
com.android.bankabc/com.feinno.teatalkavsdk.service.Keep2 | 50              | 6s 609ms       | [19:56:51 - 19:56:51], [19:56:56 - 19:56:56], [19:57:01 - 19:57:01], [19:57:06 - 19:57:06], [19:57:11 - 19:57:11], [19:57:17 - 19:57:17], [19:57:21 - 19:57:22], [19:57:27 - 19:57:27], [19:57:33 - 19:57:33], [19:57:37 - 19:57:38], [19:57:43 - 19:57:43], [19:57:48 - 19:57:48], [19:57:53 - 19:57:53], [19:57:58 - 19:57:59], [19:58:03 - 19:58:04], [19:58:08 - 19:58:09], [19:58:14 - 19:58:14], [19:58:19 - 19:58:20], [19:58:24 - 19:58:25], [19:58:30 - 19:58:30], [19:58:35 - 19:58:35], [19:58:41 - 19:58:41], [19:58:46 - 19:58:46], [19:58:50 - 19:58:51], [19:58:56 - 19:58:56], [19:59:01 - 19:59:01], [19:59:06 - 19:59:06], [19:59:11 - 19:59:11], [19:59:17 - 19:59:17], [19:59:23 - 19:59:23], [19:59:27 - 19:59:28], [19:59:32 - 19:59:33], [19:59:37 - 19:59:38], [19:59:43 - 19:59:43], [19:59:48 - 19:59:48], [19:59:53 - 19:59:53], [19:59:58 - 19:59:59], [20:00:03 - 20:00:04], [20:00:08 - 20:00:09], [20:00:13 - 20:00:14], [20:00:18 - 20:00:19], [20:00:24 - 20:00:24], [20:00:29 - 20:00:29], [20:00:34 - 20:00:34], [20:00:39 - 20:00:39], [20:00:45 - 20:00:45], [20:00:50 - 20:00:51], [20:00:55 - 20:00:56], [20:01:01 - 20:01:01], [20:01:05 - 20:01:06]

对比其他的唤醒源，就 com.android.bankabc 后台大量唤醒

 JobScheduler Jobs:
Show  entriesSearch:
Ranking Name    Uid Duration / Hr   Count / Hr  Total Duration  Total Count
0   com.android.bankabc : com.android.bankabc/com.feinno.teatalkavsdk.service.Keep2 10078   561ms   69.38   9.631s  1191
1   com.snda.wifilocating : com.snda.wifilocating/com.lantern.daemon.JobSchedulerService    10119   164ms   0.70    2.828s  12
2   com.tencent.reading : com.tencent.reading/com.tencent.news.push.pullwake.jobsched.JobService    10135   83ms    0.76    1.436s  13
3   com.meelive.ingkee : com.meelive.ingkee/.business.room.socketio.connection.internal.KAJobService    10103   67ms    0.52    1.151s  9
4   com.sankuai.meituan : com.sankuai.meituan/com.dianping.base.push.pushservice.PushWakeUpJob  10115   64ms    0.35    1.108s  6

2.3.1 com.android.bankabc 具体唤醒数据

Application com.android.bankabc
Version Name    3.7.3
Version Code    23
UID 10078
CPU user time   1s 920ms
CPU system time 1s 225ms
Device estimated power use due to CPU usage 0.00%Wakelocks:
Show  entriesSearch:
Wakelock Name   Full Time   Full Count  Minimum total partial Time  Partial Count   Window Time Window Count
*job*/com.android.bankabc/com.feinno.teatalkavsdk.service.Keep2     0   2s 897ms    951     0
Showing 1 to 1 of 1 entriesPrevious1NextProcess info:
Show  entriesSearch:
Process Name    User Time   System Time Foreground Time # Starts    # ANRs  # Crashes
com.android.bankabc:CMCoreService   1s 930ms    1s 230ms        0   0   0
Showing 1 to 1 of 1 entriesPrevious1NextScheduled Job:
Show  entriesSearch:
Job Name    Total Time  Count
com.android.bankabc/com.feinno.teatalkavsdk.service.Keep2   9s 631ms    1191
Showing 1 to 1 of 1 entries

3. 解决思路

重新进行测试，放置到信号位置OK的地方
暗屏过程中，尤其是dile模式下，禁止 com.android.bankabc/com.feinno.teatalkavsdk.service.Keep2 唤醒，或进行唤醒次数控制

08-22 09:20:03.514836  1040  1040 D PowerManagerNotifier: onWakeLockAcquired: flags=1, tag="*job*/com.android.bankabc/com.feinno.teatalkavsdk.service.Keep2", packageName=android, ownerUid=1000, ownerPid=1040, workSource=WorkSource{10078}08-22 09:20:03.516849  1040  1040 D PowerManagerNotifier: onWakeLockReleased: flags=1, tag="*job*/com.android.bankabc/com.feinno.teatalkavsdk.service.Keep2", packageName=android, ownerUid=1000, ownerPid=1040, workSource=WorkSource{10078}