本頁面由 Cloud Translation API 翻譯而成。

讀取錯誤報告

錯誤回報都是所有類型的開發中的實際錯誤，而錯誤報告是找出及解決問題的關鍵所有 Android 版本支援擷取錯誤報告的 Debug Bridge (ADB)；Android 4.2 以上版本支援開發人員提供取得錯誤報告，並透過電子郵件、雲端硬碟等分享

Android 錯誤報告包含 dumpsys、dumpstate 和 logcat 格式的文字 (.txt) 資料，方便您輕鬆搜尋特定內容。以下各節將詳細說明錯誤報告元件。說明常見問題，並提供實用提示和 grep 指令以尋找與這些錯誤相關的記錄檔大部分部分也提供範例，適用於 grep 指令和輸出和/或 dumpsys 輸出內容。

Logcat

logcat 記錄是所有 logcat 以字串為基礎的傾印可能不準確或不適當系統部分會保留給架構，記錄的時間比 main (包含所有其他項目) 更長。每一行通常以 timestamp UID PID TID log-level 開頭。但 UID 可能不會顯示在舊版 Android 中。

顯示範例

------ SYSTEM LOG (logcat -v threadtime -d *:v) ------
--------- beginning of system
Blah
Blah
Blah

--------- beginning of main
Blah 
Blah
Blah

查看事件記錄

這份記錄包含二進位格式記錄訊息的字串形式。這項服務的雜訊比 logcat 記錄小，但又不易讀取。查看事件記錄時，您可以在這個部分搜尋特定程序 ID (PID)，瞭解程序執行了哪些作業。基本格式如下： timestamp PID TID log-level log-tag tag-values。

記錄層級包括：

V：詳細
D：偵錯
I：資訊
W：警告
E：錯誤

顯示範例

------ EVENT LOG (logcat -b events -v threadtime -d *:v) ------
09-28 13:47:34.179   785  5113 I am_proc_bound: [0,23054,com.google.android.gms.unstable]
09-28 13:47:34.777   785  1975 I am_proc_start: [0,23134,10032,com.android.chrome,broadcast,com.android.chrome/org.chromium.chrome.browser.precache.PrecacheServiceLauncher]
09-28 13:47:34.806   785  2764 I am_proc_bound: [0,23134,com.android.chrome]
...

如需其他實用的事件紀錄標記，請參閱 /services/core/java/com/android/server/EventLogTags.logtags。

ANR 與死結

錯誤報告可協助你找出原因帶入個人需求無回應 (ANR) 錯誤和死結事件。

找出無回應的應用程式

如果應用程式未在特定時間內回應，通常是因為系統會終止程序並將堆疊轉儲 /data/anr。如要找出 ANR 背後的根本原因， am_anr。

顯示範例

grep "am_anr" bugreport-2015-10-01-18-13-48.txt
10-01 18:12:49.599  4600  4614 I am_anr  : [0,29761,com.google.android.youtube,953695941,executing service com.google.android.youtube/com.google.android.apps.youtube.app.offline.transfer.OfflineTransferService]
10-01 18:14:10.211  4600  4614 I am_anr  : [0,30363,com.google.android.apps.plus,953728580,executing service com.google.android.apps.plus/com.google.android.apps.photos.service.PhotosService]

您也可以在 logcat 記錄中針對 ANR in 執行雜訊。，進一步瞭解 ANR 發生時的 CPU 使用率。

顯示範例

grep "ANR in" bugreport-2015-10-01-18-13-48.txt
10-01 18:13:11.984  4600  4614 E ActivityManager: ANR in com.google.android.youtube
10-01 18:14:31.720  4600  4614 E ActivityManager: ANR in com.google.android.apps.plus
10-01 18:14:31.720  4600  4614 E ActivityManager: PID: 30363
10-01 18:14:31.720  4600  4614 E ActivityManager: Reason: executing service com.google.android.apps.plus/com.google.android.apps.photos.service.PhotosService
10-01 18:14:31.720  4600  4614 E ActivityManager: Load: 35.27 / 23.9 / 16.18
10-01 18:14:31.720  4600  4614 E ActivityManager: CPU usage from 16ms to 21868ms later:
10-01 18:14:31.720  4600  4614 E ActivityManager:   74% 3361/mm-qcamera-daemon: 62% user + 12% kernel / faults: 15276 minor 10 major
10-01 18:14:31.720  4600  4614 E ActivityManager:   41% 4600/system_server: 18% user + 23% kernel / faults: 18597 minor 309 major
10-01 18:14:31.720  4600  4614 E ActivityManager:   32% 27420/com.google.android.GoogleCamera: 24% user + 7.8% kernel / faults: 48374 minor 338 major
10-01 18:14:31.720  4600  4614 E ActivityManager:   16% 130/kswapd0: 0% user + 16% kernel
10-01 18:14:31.720  4600  4614 E ActivityManager:   15% 283/mmcqd/0: 0% user + 15% kernel
...
10-01 18:14:31.720  4600  4614 E ActivityManager:   0.1% 27248/irq/503-synapti: 0%
10-01 18:14:31.721  4600  4614 I ActivityManager: Killing 30363:com.google.android.apps.plus/u0a206 (adj 0): bg anr

尋找堆疊追蹤

您通常可以找到與 ANR 對應的堆疊追蹤。請確認 VM 追蹤記錄的時間戳記和 PID，與您正在調查的 ANR 事件相符，檢查處理程序的主執行緒注意事項：

主要執行緒只會告訴您執行緒在進行執行緒作業時正在執行的工作 ANR 事件：這不一定代表發生 ANR 的真正原因。(在錯誤報告可能屬於無害；可能有其他東西停滯不前但由於 ANR 的時間不夠長，所以不會變得緩慢。
超過一組堆疊追蹤 (VM TRACES JUST NOW 和 VM TRACES AT LAST ANR) 可能存在。請務必查看找到正確的部分

顯示範例

------ VM TRACES AT LAST ANR (/data/anr/traces.txt: 2015-10-01 18:14:41) ------

----- pid 30363 at 2015-10-01 18:14:11 -----
Cmd line: com.google.android.apps.plus
Build fingerprint: 'google/angler/angler:6.0/MDA89D/2294819:userdebug/dev-keys'
ABI: 'arm'
Build type: optimized
Zygote loaded classes=3978 post zygote classes=27
Intern table: 45068 strong; 21 weak
JNI: CheckJNI is off; globals=283 (plus 360 weak)
Libraries: /system/lib/libandroid.so /system/lib/libcompiler_rt.so /system/lib/libjavacrypto.so /system/lib/libjnigraphics.so /system/lib/libmedia_jni.so /system/lib/libwebviewchromium_loader.so libjavacore.so (7)
Heap: 29% free, 21MB/30MB; 32251 objects
Dumping cumulative Gc timings
Total number of allocations 32251
Total bytes allocated 21MB
Total bytes freed 0B
Free memory 9MB
Free memory until GC 9MB
Free memory until OOME 490MB
Total memory 30MB
Max memory 512MB
Zygote space size 1260KB
Total mutator paused time: 0
Total time waiting for GC to complete: 0
Total GC count: 0
Total GC time: 0
Total blocking GC count: 0
Total blocking GC time: 0

suspend all histogram:  Sum: 119.728ms 99% C.I. 0.010ms-107.765ms Avg: 5.442ms Max: 119.562ms
DALVIK THREADS (12):
"Signal Catcher" daemon prio=5 tid=2 Runnable
  | group="system" sCount=0 dsCount=0 obj=0x12c400a0 self=0xef460000
  | sysTid=30368 nice=0 cgrp=default sched=0/0 handle=0xf4a69930
  | state=R schedstat=( 9021773 5500523 26 ) utm=0 stm=0 core=1 HZ=100
  | stack=0xf496d000-0xf496f000 stackSize=1014KB
  | held mutexes= "mutator lock"(shared held)
  native: #00 pc 0035a217  /system/lib/libart.so (art::DumpNativeStack(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, int, char const*, art::ArtMethod*, void*)+126)
  native: #01 pc 0033b03b  /system/lib/libart.so (art::Thread::Dump(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) const+138)
  native: #02 pc 00344701  /system/lib/libart.so (art::DumpCheckpoint::Run(art::Thread*)+424)
  native: #03 pc 00345265  /system/lib/libart.so (art::ThreadList::RunCheckpoint(art::Closure*)+200)
  native: #04 pc 00345769  /system/lib/libart.so (art::ThreadList::Dump(std::__1::basic_ostream<char, std::__1::char_traits<char> >&)+124)
  native: #05 pc 00345e51  /system/lib/libart.so (art::ThreadList::DumpForSigQuit(std::__1::basic_ostream<char, std::__1::char_traits<char> >&)+312)
  native: #06 pc 0031f829  /system/lib/libart.so (art::Runtime::DumpForSigQuit(std::__1::basic_ostream<char, std::__1::char_traits<char> >&)+68)
  native: #07 pc 00326831  /system/lib/libart.so (art::SignalCatcher::HandleSigQuit()+896)
  native: #08 pc 003270a1  /system/lib/libart.so (art::SignalCatcher::Run(void*)+324)
  native: #09 pc 0003f813  /system/lib/libc.so (__pthread_start(void*)+30)
  native: #10 pc 00019f75  /system/lib/libc.so (__start_thread+6)
  (no managed stack frames)

"main" prio=5 tid=1 Suspended
  | group="main" sCount=1 dsCount=0 obj=0x747552a0 self=0xf5376500
  | sysTid=30363 nice=0 cgrp=default sched=0/0 handle=0xf74feb34
  | state=S schedstat=( 331107086 164153349 851 ) utm=6 stm=27 core=3 HZ=100
  | stack=0xff00f000-0xff011000 stackSize=8MB
  | held mutexes=
  kernel: __switch_to+0x7c/0x88
  kernel: futex_wait_queue_me+0xd4/0x130
  kernel: futex_wait+0xf0/0x1f4
  kernel: do_futex+0xcc/0x8f4
  kernel: compat_SyS_futex+0xd0/0x14c
  kernel: cpu_switch_to+0x48/0x4c
  native: #00 pc 000175e8  /system/lib/libc.so (syscall+28)
  native: #01 pc 000f5ced  /system/lib/libart.so (art::ConditionVariable::Wait(art::Thread*)+80)
  native: #02 pc 00335353  /system/lib/libart.so (art::Thread::FullSuspendCheck()+838)
  native: #03 pc 0011d3a7  /system/lib/libart.so (art::ClassLinker::LoadClassMembers(art::Thread*, art::DexFile const&, unsigned char const*, art::Handle<art::mirror::Class>, art::OatFile::OatClass const*)+746)
  native: #04 pc 0011d81d  /system/lib/libart.so (art::ClassLinker::LoadClass(art::Thread*, art::DexFile const&, art::DexFile::ClassDef const&, art::Handle<art::mirror::Class>)+88)
  native: #05 pc 00132059  /system/lib/libart.so (art::ClassLinker::DefineClass(art::Thread*, char const*, unsigned int, art::Handle<art::mirror::ClassLoader>, art::DexFile const&, art::DexFile::ClassDef const&)+320)
  native: #06 pc 001326c1  /system/lib/libart.so (art::ClassLinker::FindClassInPathClassLoader(art::ScopedObjectAccessAlreadyRunnable&, art::Thread*, char const*, unsigned int, art::Handle<art::mirror::ClassLoader>, art::mirror::Class**)+688)
  native: #07 pc 002cb1a1  /system/lib/libart.so (art::VMClassLoader_findLoadedClass(_JNIEnv*, _jclass*, _jobject*, _jstring*)+264)
  native: #08 pc 002847fd  /data/dalvik-cache/arm/system@framework@boot.oat (Java_java_lang_VMClassLoader_findLoadedClass__Ljava_lang_ClassLoader_2Ljava_lang_String_2+112)
  at java.lang.VMClassLoader.findLoadedClass!(Native method)
  at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:362)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:499)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
  at android.app.ActivityThread.installProvider(ActivityThread.java:5141)
  at android.app.ActivityThread.installContentProviders(ActivityThread.java:4748)
  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4688)
  at android.app.ActivityThread.-wrap1(ActivityThread.java:-1)
  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1405)
  at android.os.Handler.dispatchMessage(Handler.java:102)
  at android.os.Looper.loop(Looper.java:148)
  at android.app.ActivityThread.main(ActivityThread.java:5417)
  at java.lang.reflect.Method.invoke!(Native method)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

  ...
  Stacks for other threads in this process follow
  ...

找出死結

由於執行緒卡住了，死結現象通常會以 ANR 的形式呈現。如果系統伺服器發生死結時監控程式最終會終止它會使記錄中的項目類似： WATCHDOG KILLING SYSTEM PROCESS。從使用者的角度來看會重新啟動，但嚴格來說這屬於執行階段重新啟動，而非完全重新啟動。

在執行階段重新啟動時，系統伺服器會停止運作，重新啟動；使用者看到裝置返回開機動畫時。
重新啟動時，核心會異常終止。使用者會看到裝置回到 Google 開機標誌。

如要找出死結，請查看 VM 追蹤記錄區段，尋找執行緒 A 的模式等待執行緒 B 保留的項目，而這又正在等待系統等候由執行緒 A 保留

顯示範例

"Binder_B" prio=5 tid=73 Blocked
  | group="main" sCount=1 dsCount=0 obj=0x13faa0a0 self=0x95e24800
  | sysTid=2016 nice=0 cgrp=default sched=0/0 handle=0x8b68d930
  | state=S schedstat=( 9351576559 4141431119 16920 ) utm=819 stm=116 core=1 HZ=100
  | stack=0x8b591000-0x8b593000 stackSize=1014KB
  | held mutexes=
  at com.android.server.pm.UserManagerService.exists(UserManagerService.java:387)
  - waiting to lock <0x025f9b02> (a android.util.ArrayMap) held by thread 20
  at com.android.server.pm.PackageManagerService.getApplicationInfo(PackageManagerService.java:2848)
  at com.android.server.AppOpsService.getOpsRawLocked(AppOpsService.java:881)
  at com.android.server.AppOpsService.getOpsLocked(AppOpsService.java:856)
  at com.android.server.AppOpsService.noteOperationUnchecked(AppOpsService.java:719)
  - locked <0x0231885a> (a com.android.server.AppOpsService)
  at com.android.server.AppOpsService.noteOperation(AppOpsService.java:713)
  at com.android.server.AppOpsService$2.getMountMode(AppOpsService.java:260)
  at com.android.server.MountService$MountServiceInternalImpl.getExternalStorageMountMode(MountService.java:3416)
  at com.android.server.am.ActivityManagerService.startProcessLocked(ActivityManagerService.java:3228)
  at com.android.server.am.ActivityManagerService.startProcessLocked(ActivityManagerService.java:3170)
  at com.android.server.am.ActivityManagerService.startProcessLocked(ActivityManagerService.java:3059)
  at com.android.server.am.BroadcastQueue.processNextBroadcast(BroadcastQueue.java:1070)
  - locked <0x044d166f> (a com.android.server.am.ActivityManagerService)
  at com.android.server.am.ActivityManagerService.finishReceiver(ActivityManagerService.java:16950)
  at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:494)
  at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2432)
  at android.os.Binder.execTransact(Binder.java:453)
...
  "PackageManager" prio=5 tid=20 Blocked
  | group="main" sCount=1 dsCount=0 obj=0x1304f4a0 self=0xa7f43900
  | sysTid=1300 nice=10 cgrp=bg_non_interactive sched=0/0 handle=0x9fcf9930
  | state=S schedstat=( 26190141996 13612154802 44357 ) utm=2410 stm=209 core=2 HZ=100
  | stack=0x9fbf7000-0x9fbf9000 stackSize=1038KB
  | held mutexes=
  at com.android.server.AppOpsService.noteOperationUnchecked(AppOpsService.java:718)
  - waiting to lock <0x0231885a> (a com.android.server.AppOpsService) held by thread 73
  at com.android.server.AppOpsService.noteOperation(AppOpsService.java:713)
  at com.android.server.AppOpsService$2.getMountMode(AppOpsService.java:260)
  at com.android.server.AppOpsService$2.hasExternalStorage(AppOpsService.java:273)
  at com.android.server.MountService$MountServiceInternalImpl.hasExternalStorage(MountService.java:3431)
  at com.android.server.MountService.getVolumeList(MountService.java:2609)
  at android.os.storage.StorageManager.getVolumeList(StorageManager.java:880)
  at android.os.Environment$UserEnvironment.getExternalDirs(Environment.java:83)
  at android.os.Environment.isExternalStorageEmulated(Environment.java:708)
  at com.android.server.pm.PackageManagerService.isExternalMediaAvailable(PackageManagerService.java:9327)
  at com.android.server.pm.PackageManagerService.startCleaningPackages(PackageManagerService.java:9367)
  - locked <0x025f9b02> (a android.util.ArrayMap)
  at com.android.server.pm.PackageManagerService$PackageHandler.doHandleMessage(PackageManagerService.java:1320)
  at com.android.server.pm.PackageManagerService$PackageHandler.handleMessage(PackageManagerService.java:1122)
  at android.os.Handler.dispatchMessage(Handler.java:102)
  at android.os.Looper.loop(Looper.java:148)
  at android.os.HandlerThread.run(HandlerThread.java:61)
  at com.android.server.ServiceThread.run(ServiceThread.java:46)

活動

活動應用程式元件，可提供使用者與執行動作互動的畫面例如撥打電話號碼、拍照、傳送電子郵件等報告的觀點活動具有單一焦點，使用者可自行操作，因此找出活動當機率相當重要活動 (透過 ActivityManager) 因此，為特定活動尋找所有程序都會停止和開始也有助於排解問題

查看聚焦活動

如要查看聚焦活動的歷史記錄，請搜尋 am_focused_activity。

顯示範例

grep "am_focused_activity" bugreport-2015-10-01-18-13-48.txt
10-01 18:10:41.409  4600 14112 I am_focused_activity: [0,com.google.android.GoogleCamera/com.android.camera.CameraActivity]
10-01 18:11:17.313  4600  5687 I am_focused_activity: [0,com.google.android.googlequicksearchbox/com.google.android.launcher.GEL]
10-01 18:11:52.747  4600 14113 I am_focused_activity: [0,com.google.android.GoogleCamera/com.android.camera.CameraActivity]
10-01 18:14:07.762  4600  5687 I am_focused_activity: [0,com.google.android.googlequicksearchbox/com.google.android.launcher.GEL]

開始查看程序

如要查看程序啟動記錄，請搜尋 Start proc。

顯示範例

grep "Start proc" bugreport-2015-10-01-18-13-48.txt
10-01 18:09:15.309  4600  4612 I ActivityManager: Start proc 24533:com.metago.astro/u0a240 for broadcast com.metago.astro/com.inmobi.commons.analytics.androidsdk.IMAdTrackerReceiver
10-01 18:09:15.687  4600 14112 I ActivityManager: Start proc 24548:com.google.android.apps.fitness/u0a173 for service com.google.android.apps.fitness/.api.services.ActivityUpsamplingService
10-01 18:09:15.777  4600  6604 I ActivityManager: Start proc 24563:cloudtv.hdwidgets/u0a145 for broadcast cloudtv.hdwidgets/cloudtv.switches.SwitchSystemUpdateReceiver
10-01 18:09:20.574  4600  6604 I ActivityManager: Start proc 24617:com.wageworks.ezreceipts/u0a111 for broadcast com.wageworks.ezreceipts/.ui.managers.IntentReceiver
...

判斷裝置是否閃爍

可判斷裝置是否 thrashing、檢查 am_proc_died 和很快就完成了 am_proc_start

顯示範例

grep -e "am_proc_died" -e "am_proc_start" bugreport-2015-10-01-18-13-48.txt
10-01 18:07:06.494  4600  9696 I am_proc_died: [0,20074,com.android.musicfx]
10-01 18:07:06.555  4600  6606 I am_proc_died: [0,31166,com.concur.breeze]
10-01 18:07:06.566  4600 14112 I am_proc_died: [0,18812,com.google.android.apps.fitness]
10-01 18:07:07.018  4600  7513 I am_proc_start: [0,20361,10113,com.sony.playmemories.mobile,broadcast,com.sony.playmemories.mobile/.service.StartupReceiver]
10-01 18:07:07.357  4600  4614 I am_proc_start: [0,20381,10056,com.google.android.talk,service,com.google.android.talk/com.google.android.libraries.hangouts.video.CallService]
10-01 18:07:07.784  4600  4612 I am_proc_start: [0,20402,10190,com.andcreate.app.trafficmonitor:loopback_measure_serivce,service,com.andcreate.app.trafficmonitor/.loopback.LoopbackMeasureService]
10-01 18:07:10.753  4600  5997 I am_proc_start: [0,20450,10097,com.amazon.mShop.android.shopping,broadcast,com.amazon.mShop.android.shopping/com.amazon.identity.auth.device.storage.LambortishClock$ChangeTimestampsBroadcastReceiver]
10-01 18:07:15.267  4600  6605 I am_proc_start: [0,20539,10173,com.google.android.apps.fitness,service,com.google.android.apps.fitness/.api.services.ActivityUpsamplingService]
10-01 18:07:15.985  4600  4612 I am_proc_start: [0,20568,10022,com.android.musicfx,broadcast,com.android.musicfx/.ControlPanelReceiver]
10-01 18:07:16.315  4600  7512 I am_proc_died: [0,20096,com.google.android.GoogleCamera]

記憶體

由於 Android 裝置通常具有有限的實體記憶體，因此要管理因此至關重要錯誤報告內含數個指標以及提供記憶體快照的轉儲狀態

找出低記憶體

記憶體不足可能會導致系統當機，因為這會終止部分程序無法使用但會繼續啟動其他程序檢視記憶體不足，請檢查 am_proc_died 濃度是否濃度偏低二進位事件記錄中的 am_proc_start 個項目。

記憶體不足也會降低工作切換速度，進而減少傳回嘗試的情況 (因為嘗試返回的工作就會終止)。如果啟動器而使用者輕觸主畫面按鈕，記錄顯示啟動器會重新載入其內容。

查看歷來指標

二進位事件記錄中的 am_low_memory 項目代表上次快取程序已結束。之後，系統會開始終止服務。

顯示範例

grep "am_low_memory" bugreport-2015-10-01-18-13-48.txt
10-01 18:11:02.219  4600  7513 I am_low_memory: 41
10-01 18:12:18.526  4600 14112 I am_low_memory: 39
10-01 18:12:18.874  4600  7514 I am_low_memory: 38
10-01 18:12:22.570  4600 14112 I am_low_memory: 40
10-01 18:12:34.811  4600 20319 I am_low_memory: 43
10-01 18:12:37.945  4600  6521 I am_low_memory: 43
10-01 18:12:47.804  4600 14110 I am_low_memory: 43

查看輾轉現象指標

其他有關系統輾轉現象 (分頁、直接索回等) 包括 kswapd、kworker 和 mmcqd 正在使用週期。(請注意，收集的錯誤報告可能會影響輾轉現象指標)。

顯示範例

------ CPU INFO (top -n 1 -d 1 -m 30 -t) ------

User 15%, System 54%, IOW 28%, IRQ 0%
User 82 + Nice 2 + Sys 287 + Idle 1 + IOW 152 + IRQ 0 + SIRQ 5 = 529

  PID   TID PR CPU% S     VSS     RSS PCY UID      Thread          Proc
15229 15229  0  19% R      0K      0K  fg root     kworker/0:2
29512 29517  1   7% D 1173524K 101188K  bg u0_a27   Signal Catcher  com.google.android.talk
24565 24570  3   6% D 2090920K 145168K  fg u0_a22   Signal Catcher  com.google.android.googlequicksearchbox:search
19525 19525  2   6% R   3476K   1644K  fg shell    top             top
24957 24962  2   5% R 1706928K 125716K  bg u0_a47   Signal Catcher  com.google.android.GoogleCamera
19519 19519  3   4% S      0K      0K  fg root     kworker/3:1
  120   120  0   3% S      0K      0K  fg root     mmcqd/1
18233 18233  1   3% S      0K      0K  fg root     kworker/1:1
25589 25594  1   2% D 1270476K  75776K  fg u0_a8    Signal Catcher  com.google.android.gms
19399 19399  2   1% S      0K      0K  fg root     kworker/2:2
 1963  1978  1   0% S 1819100K 125136K  fg system   android.fg      system_server
 1963  1981  3   0% S 1819100K 125136K  fg system   android.display system_server

ANR 記錄可以提供類似的記憶體快照。

顯示範例

10-03 17:19:59.959  1963  1976 E ActivityManager: ANR in com.google.android.apps.magazines
10-03 17:19:59.959  1963  1976 E ActivityManager: PID: 18819
10-03 17:19:59.959  1963  1976 E ActivityManager: Reason: Broadcast of Intent { act=android.net.conn.CONNECTIVITY_CHANGE flg=0x4000010 cmp=com.google.android.apps.magazines/com.google.apps.dots.android.newsstand.appwidget.NewsWidgetProvider (has extras) }
10-03 17:19:59.959  1963  1976 E ActivityManager: Load: 19.19 / 14.76 / 12.03
10-03 17:19:59.959  1963  1976 E ActivityManager: CPU usage from 0ms to 11463ms later:
10-03 17:19:59.959  1963  1976 E ActivityManager:   54% 15229/kworker/0:2: 0% user + 54% kernel
10-03 17:19:59.959  1963  1976 E ActivityManager:   38% 1963/system_server: 14% user + 23% kernel / faults: 17152 minor 1073 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   11% 120/mmcqd/1: 0% user + 11% kernel
10-03 17:19:59.959  1963  1976 E ActivityManager:   10% 2737/com.android.systemui: 4.7% user + 5.6% kernel / faults: 7211 minor 149 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   0.2% 1451/debuggerd: 0% user + 0.2% kernel / faults: 15211 minor 147 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   8.7% 6162/com.twofortyfouram.locale: 4% user + 4.7% kernel / faults: 4924 minor 260 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   6.1% 24565/com.google.android.googlequicksearchbox:search: 2.4% user + 3.7% kernel / faults: 2902 minor 129 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   6% 55/kswapd0: 0% user + 6% kernel
10-03 17:19:59.959  1963  1976 E ActivityManager:   4.9% 18819/com.google.android.apps.magazines: 1.5% user + 3.3% kernel / faults: 10129 minor 986 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   2.8% 18233/kworker/1:1: 0% user + 2.8% kernel
10-03 17:19:59.959  1963  1976 E ActivityManager:   4.2% 3145/com.android.phone: 2% user + 2.2% kernel / faults: 3005 minor 43 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   4.2% 8084/com.android.chrome: 2% user + 2.1% kernel / faults: 4798 minor 380 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   3.4% 182/surfaceflinger: 1.1% user + 2.3% kernel / faults: 842 minor 13 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   3% 18236/kworker/1:2: 0% user + 3% kernel
10-03 17:19:59.959  1963  1976 E ActivityManager:   2.9% 19231/com.android.systemui:screenshot: 0.8% user + 2.1% kernel / faults: 6119 minor 348 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   2.3% 15350/kworker/0:4: 0% user + 2.3% kernel
10-03 17:19:59.959  1963  1976 E ActivityManager:   2.2% 1454/mediaserver: 0% user + 2.2% kernel / faults: 479 minor 6 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   2% 16496/com.android.chrome:sandboxed_process10: 0.1% user + 1.8% kernel / faults: 3610 minor 234 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   1% 3119/com.android.nfc: 0.4% user + 0.5% kernel / faults: 1789 minor 17 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   1.7% 19337/com.jarettmillard.localeconnectiontype:background: 0.1% user + 1.5% kernel / faults: 7854 minor 439 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   0.7% 3066/com.google.android.inputmethod.latin: 0.3% user + 0.3% kernel / faults: 1336 minor 7 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   1% 25589/com.google.android.gms: 0.3% user + 0.6% kernel / faults: 2867 minor 237 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   0.9% 1460/sensors.qcom: 0.5% user + 0.4% kernel / faults: 262 minor 5 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   0.8% 3650/mpdecision: 0% user + 0.8% kernel / faults: 160 minor 1 major
10-03 17:19:59.959  1963  1976 E ActivityManager:   0.1% 3132/com.redbend.vdmc: 0% user + 0% kernel / faults: 1746 minor 5 major

取得記憶體快照

記憶體快照是一個轉儲狀態，會列出執行 Java 和原生程序 (詳情請參閱檢視整體記憶體配置)。請注意，快照僅會顯示特定時間點的客群；系統可能表現得更好 (或甚至更糟) 然後繪製在快照前面

如要瞭解處理程序的執行時間長度，請參閱處理執行階段。
如要瞭解項目正在執行的原因，請參閱為什麼 Google 正在執行處理程序？

顯示範例

Total PSS by OOM adjustment:
    86752 kB: Native
               22645 kB: surfaceflinger (pid 197)
               18597 kB: mediaserver (pid 204)
               ...
   136959 kB: System
              136959 kB: system (pid 785)
   220218 kB: Persistent
              138859 kB: com.android.systemui (pid 947 / activities)
               39178 kB: com.android.nfc (pid 1636)
               28313 kB: com.android.phone (pid 1659)
               13868 kB: com.redbend.vdmc (pid 1646)
     9534 kB: Persistent Service
                9534 kB: com.android.bluetooth (pid 23807)
   178604 kB: Foreground
              168620 kB: com.google.android.googlequicksearchbox (pid 1675 / activities)
                9984 kB: com.google.android.apps.maps (pid 13952)
   188286 kB: Visible
               85326 kB: com.google.android.wearable.app (pid 1535)
               38978 kB: com.google.process.gapps (pid 1510)
               31936 kB: com.google.android.gms.persistent (pid 2072)
               27950 kB: com.google.android.gms.wearable (pid 1601)
                4096 kB: com.google.android.googlequicksearchbox:interactor (pid 1550)
    52948 kB: Perceptible
               52948 kB: com.google.android.inputmethod.latin (pid 1566)
   150851 kB: A Services
               81121 kB: com.google.android.gms (pid 1814)
               37586 kB: com.google.android.talk (pid 9584)
               10949 kB: com.google.android.music:main (pid 4019)
               10727 kB: com.motorola.targetnotif (pid 31071)
               10468 kB: com.google.android.GoogleCamera (pid 9984)
    33298 kB: Previous
               33298 kB: com.android.settings (pid 9673 / activities)
   165188 kB: B Services
               49490 kB: com.facebook.katana (pid 15035)
               22483 kB: com.whatsapp (pid 28694)
               21308 kB: com.iPass.OpenMobile (pid 5325)
               19788 kB: com.google.android.apps.googlevoice (pid 23934)
               17399 kB: com.google.android.googlequicksearchbox:search (pid 30359)
                9073 kB: com.google.android.apps.youtube.unplugged (pid 21194)
                7660 kB: com.iPass.OpenMobile:remote (pid 23754)
                7291 kB: com.pujie.wristwear.pujieblack (pid 24240)
                7157 kB: com.instagram.android:mqtt (pid 9530)
                3539 kB: com.qualcomm.qcrilmsgtunnel (pid 16186)
   204324 kB: Cached
               43424 kB: com.amazon.mShop.android (pid 13558)
               22563 kB: com.google.android.apps.magazines (pid 13844)
               ...
                4298 kB: com.google.android.apps.enterprise.dmagent (pid 13826)

廣播

應用程式會產生廣播訊息，在目前的或其他應用程式訂閱特定訊息，讓他們能夠聽取及回應廣播訊息。錯誤報告包含已傳送和未傳送廣播的相關資訊，例如以及監聽特定廣播訊息的所有接收器

查看歷來廣播內容

過往廣播訊息是指已收到的內容，列於由新到舊排序

「摘要」部分會顯示最近 300 項的總覽資訊前景廣播和最近 300 次背景廣播訊息。

顯示範例

 Historical broadcasts summary [foreground]:
 #0: act=android.intent.action.SCREEN_ON flg=0x50000010
    +1ms dispatch +90ms finish
    enq=2015-10-29 17:10:51 disp=2015-10-29 17:10:51 fin=2015-10-29 17:10:51
  #1: act=android.intent.action.SCREEN_OFF flg=0x50000010
    0 dispatch +60ms finish
    enq=2015-10-29 17:10:05 disp=2015-10-29 17:10:05 fin=2015-10-29 17:10:05
 ...
 Historical broadcasts summary [background]:
 ...

「detail」部分包含最近 50 次的前景廣播和最近 50 次背景廣播訊息，以及每個廣播訊息的接收器。具備以下特性的接收器：

有 BroadcastFilter 個項目在執行階段註冊並傳送只能在已執行的程序上執行
已透過資訊清單項目註冊 ResolveInfo 個項目。如果符合下列條件，ActivityManager 會為每個 ResolveInfo 啟動程序目前並未運作

顯示範例

Historical broadcasts [foreground]:
 ...
 Historical broadcasts [background]:
 Historical Broadcast background #0:
 ...
 Historical Broadcast background #5:
    BroadcastRecord{18dbb16 u0 android.intent.action.USER_PRESENT} to user 0
    Intent { act=android.intent.action.USER_PRESENT flg=0x24000010 }
    caller=com.android.systemui 2925:com.android.systemui/u0a27 pid=2925 uid=10027
    enqueueClockTime=2015-10-29 17:10:55 dispatchClockTime=2015-10-29 17:10:55
    dispatchTime=-2s321ms (0 since enq) finishTime=-2s320ms (+1ms since disp)
    Receiver #0: BroadcastFilter{8181cc1 u-1 ReceiverList{5d929a8 902 system/1000/u-1 local:eca4dcb}}
    Receiver #1: BroadcastFilter{6371c97 u-1 ReceiverList{2938b16 902 system/1000/u-1 local:840b831}}
    ...
    Receiver #19: BroadcastFilter{93f16b u0 ReceiverList{5c61eba 17016 com.google.android.gm/10079/u0 remote:24083e5}}
 ...
 Historical Broadcast background #37:
    BroadcastRecord{7f6dd6 u0 android.hardware.action.NEW_PICTURE} to user 0
    Intent { act=android.hardware.action.NEW_PICTURE dat=content://media/external/images/media/6345 flg=0x10 }
    caller=com.google.android.GoogleCamera 32734:com.google.android.GoogleCamera/u0a53 pid=32734 uid=10053
    enqueueClockTime=2015-10-29 17:09:48 dispatchClockTime=2015-10-29 17:09:49
    dispatchTime=-45s720ms (+399ms since enq) finishTime=-45s701ms (+19ms since disp)
    resultTo=null resultCode=0 resultData=null
    nextReceiver=4 receiver=null
    Receiver #0: ResolveInfo{33d2857 com.google.android.gms/com.google.android.libraries.social.mediamonitor.MediaMonitor m=0x608000}
      priority=0 preferredOrder=0 match=0x608000 specificIndex=-1 isDefault=false
      ActivityInfo:
        name=com.google.android.libraries.social.mediamonitor.MediaMonitor
        packageName=com.google.android.gms
        enabled=true exported=true processName=com.google.android.gms
        ...
    Receiver #1: ResolveInfo{d9edf44 com.google.android.apps.maps/com.google.android.apps.gmm.ugc.clientnotification.StartPhotoTakenNotifierServiceReceiver m=0x608000}
      priority=0 preferredOrder=0 match=0x608000 specificIndex=-1 isDefault=false
      ActivityInfo:
        name=com.google.android.apps.gmm.ugc.clientnotification.StartPhotoTakenNotifierServiceReceiver
        packageName=com.google.android.apps.maps
        enabled=true exported=true processName=com.google.android.apps.maps
        ...
    Receiver #2: ResolveInfo{743f82d com.google.android.apps.photos/com.google.android.libraries.social.mediamonitor.MediaMonitor m=0x608000}
      priority=0 preferredOrder=0 match=0x608000 specificIndex=-1 isDefault=false
      ActivityInfo:
        name=com.google.android.libraries.social.mediamonitor.MediaMonitor
        packageName=com.google.android.apps.photos
        enabled=true exported=true processName=com.google.android.apps.photos
        ...
    Receiver #3: ResolveInfo{d5c9162 com.google.android.apps.plus/com.google.android.libraries.social.mediamonitor.MediaMonitor m=0x608000}
      priority=0 preferredOrder=0 match=0x608000 specificIndex=-1 isDefault=false
      ActivityInfo:
        name=com.google.android.libraries.social.mediamonitor.MediaMonitor
        packageName=com.google.android.apps.plus
        enabled=true exported=true processName=com.google.android.apps.plus
        ...

查看進行中的廣播訊息

主動廣播是指尚未傳送的廣播訊息。這個數字中的佇列表示系統發送廣播速度不夠快，無法跟上一樣。

顯示範例

 Active ordered broadcasts [background]:
 Active Ordered Broadcast background #133: // size of queue
 ...

查看廣播事件監聽器

如要查看監聽廣播的接收器清單，請檢查接收器 dumpsys activity broadcasts 中的解析器資料表。下列範例會顯示所有監聽 USER_PRESENT 的接收器。

顯示範例

-------------------------------------------------------------------------------
ACTIVITY MANAGER BROADCAST STATE (dumpsys activity broadcasts)
..
  Receiver Resolver Table:
    Full MIME Types:
    ..
    Wild MIME Types:
    ..
    Schemes:
    ..
    Non-Data Actions:
    ..
        android.intent.action.USER_PRESENT:
          BroadcastFilter{8181cc1 u-1 ReceiverList{5d929a8 902 system/1000/u-1 local:eca4dcb}}
          BroadcastFilter{6371c97 u-1 ReceiverList{2938b16 902 system/1000/u-1 local:840b831}}
          BroadcastFilter{320c00 u0 ReceiverList{d3a6283 902 system/1000/u0 local:799c532}}
          BroadcastFilter{e486048 u0 ReceiverList{36fbaeb 902 system/1000/u0 local:5f51e3a}}
          BroadcastFilter{22b02 u-1 ReceiverList{b3f744d 902 system/1000/u-1 local:de837e4}}
          BroadcastFilter{3e989ab u0 ReceiverList{f8deffa 2981 com.google.process.gapps/10012/u0 remote:26bd225}}
          BroadcastFilter{fb56150 u0 ReceiverList{22b7b13 2925 com.android.systemui/10027/u0 remote:c54a602}}
          BroadcastFilter{63bbb6 u-1 ReceiverList{ba6c751 3484 com.android.nfc/1027/u-1 remote:5c4a478}}
          BroadcastFilter{95ad20d u0 ReceiverList{d8374a4 3586 com.google.android.googlequicksearchbox/10029/u0 remote:feb3737}}
          BroadcastFilter{fdef551 u0 ReceiverList{28ca78 3745 com.google.android.gms.persistent/10012/u0 remote:f23afdb}}
          BroadcastFilter{9830707 u0 ReceiverList{aabd946 3745 com.google.android.gms.persistent/10012/u0 remote:a4da121}}
          BroadcastFilter{83c43d2 u0 ReceiverList{d422e5d 3745 com.google.android.gms.persistent/10012/u0 remote:f585034}}
          BroadcastFilter{8890378 u0 ReceiverList{26d2cdb 3745 com.google.android.gms.persistent/10012/u0 remote:dfa61ea}}
          BroadcastFilter{7bbb7 u0 ReceiverList{214b2b6 3745 com.google.android.gms.persistent/10012/u0 remote:8353a51}}
          BroadcastFilter{38d3566 u0 ReceiverList{de859c1 3745 com.google.android.gms.persistent/10012/u0 remote:e003aa8}}
          BroadcastFilter{3435d9f u0 ReceiverList{6e38b3e 3745 com.google.android.gms.persistent/10012/u0 remote:8dd7ff9}}
          BroadcastFilter{d0a34bb u0 ReceiverList{5091d4a 3745 com.google.android.gms.persistent/10012/u0 remote:d6d22b5}}
          BroadcastFilter{d43c416 u0 ReceiverList{51a3531 3745 com.google.android.gms.persistent/10012/u0 remote:d0b9dd8}}
          BroadcastFilter{aabf36d u0 ReceiverList{a88bf84 3745 com.google.android.gms.persistent/10012/u0 remote:a9d6197}}
          BroadcastFilter{93f16b u0 ReceiverList{5c61eba 17016 com.google.android.gm/10079/u0 remote:24083e5}}
          BroadcastFilter{68f794e u0 ReceiverList{4cb1c49 947 com.google.android.googlequicksearchbox:search/10029/u0 remote:251d250}}
      ..
    MIME Typed Actions:

監控系統衝突

監控爭用記錄有時可以指出實際的監控爭用情況，但大多表示系統負載過慢，進而拖慢了速度。您可能會在系統或事件記錄中看到 ART 記錄的長時間監控事件。

在系統記錄中：

10-01 18:12:44.343 29761 29914 W art     : Long monitor contention event with owner method=void android.database.sqlite.SQLiteClosable.acquireReference() from SQLiteClosable.java:52 waiters=0 for 3.914s

在事件記錄中：

10-01 18:12:44.364 29761 29914 I dvm_lock_sample: [com.google.android.youtube,0,pool-3-thread-9,3914,ScheduledTaskMaster.java,138,SQLiteClosable.java,52,100]

背景編譯

編譯費用可能相當高昂，且載入裝置可能相當高昂。

顯示範例

09-14 06:27:05.670  2508  2587 E ActivityManager: CPU usage from 0ms to 5857ms later:
09-14 06:27:05.670  2508  2587 E ActivityManager:   84% 5708/dex2oat: 81% user + 2.3% kernel / faults: 3731 minor 1 major
09-14 06:27:05.670  2508  2587 E ActivityManager:   73% 2508/system_server: 21% user + 51% kernel / faults: 10019 minor 28 major
09-14 06:27:05.670  2508  2587 E ActivityManager:   1% 3935/com.android.phone: 0.3% user + 0.6% kernel / faults: 2684 minor 2 major

在系統執行 Google Play 商店更新時，系統可能會在背景執行編譯作業下載。在此情況下，來自 Google Play 商店應用程式的訊息在以下日期前顯示 (finsky) 和 installd dex2oat 則訊息。

顯示範例

10-07 08:42:33.725 11051 11051 D Finsky  : [1] InstallerTask.advanceState: Prepare to patch com.garmin.android.apps.virb (com.garmin.android.apps.virb) from content://downloads/my_downloads/3602 format 2
10-07 08:42:33.752   495   495 I installd: free_cache(48637657) avail 15111192576
…
10-07 08:42:39.998  2497  2567 I PackageManager.DexOptimizer: Running dexopt (dex2oat) on: /data/app/vmdl436577137.tmp/base.apk pkg=com.garmin.android.apps.virb isa=arm vmSafeMode=false debuggable=false oatDir = /data/app/vmdl436577137.tmp/oat bootComplete=true
…

在載入應用程式時，也可能在背景執行編譯作業尚未編譯的 dex 檔案在這種情況下 finsky 或 installd 記錄。

顯示範例

09-14 07:29:20.433 15736 15736 I dex2oat : /system/bin/dex2oat -j4 --dex-file=/data/user/0/com.facebook.katana/app_secondary_program_dex/program-72cef82b591768306676e10161c886b58b34315a308602be.dex.jar --oat-file=/data/user/0/com.facebook.katana/app_secondary_program_dex_opt/program-72cef82b591768306676e10161c886b58b34315a308602be.dex.dex
...
09-14 07:29:25.102 15736 15736 I dex2oat : dex2oat took 4.669s (threads: 4) arena alloc=7MB java alloc=3MB native alloc=29MB free=4MB

敘事

構思問題的敘事方式 (問題發生方式、狀況、情況系統回應) 需要完整的事件時間軸。您可以使用同步處理多個記錄檔的時間軸資料判斷錯誤報告的確切時間戳記。

同步時間表

錯誤報告反映了多個平行的時程，包括系統記錄、事件記錄、核心記錄，以及多個廣播、電池統計資料、等，回報時間軸資料通常採用不同的時間基準。

系統和事件記錄時間戳記與使用者位於相同的時區 ( 是其他大多數時間戳記)。舉例來說，當使用者輕觸主畫面按鈕時，系統記錄報告：

10-03 17:19:52.939  1963  2071 I ActivityManager: START u0 {act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10200000 cmp=com.google.android.googlequicksearchbox/com.google.android.launcher.GEL (has extras)} from uid 1000 on display 0

如果動作是同一個動作，事件記錄會報告如下：

10-03 17:19:54.279  1963  2071 I am_focused_activity: [0,com.google.android.googlequicksearchbox/com.google.android.launcher.GEL]

核心 (dmesg) 記錄使用不同的時間基準，為記錄項目加上標記。為了向其他時間量表，請搜尋「suspend 結束」和「suspendEntry」訊息：

<6>[201640.779997] PM: suspend exit 2015-10-03 19:11:06.646094058 UTC
…
<6>[201644.854315] PM: suspend entry 2015-10-03 19:11:10.720416452 UTC

核心記錄檔可能不會包含暫停期間的時間，因此，同時登錄暫停進入和離開訊息之間的紀錄。此外，核心記錄採用世界標準時間時區，因此必須根據使用者需求進行調整時區。

找出錯誤報告時間

如想判斷錯誤報告的取得時間，請先查看系統記錄 (Logcat) 針對 dumpstate: begin：

10-03 17:19:54.322 19398 19398 I dumpstate: begin

接著，查看 Starting service 'bugreport' 訊息的核心記錄 (dmesg) 時間戳記：

<5>[207064.285315] init: Starting service 'bugreport'...

反向工作來為兩個事件建立關聯，請記住注意事項已在「同步處理時間表」中所述。這部分發生這類情況時，大多數的活動其實沒那麼實用回報錯誤的動作會嚴重載入系統。

電源

事件記錄包含螢幕電源狀態，其中 0 關閉螢幕，1 為開啟螢幕，2 代表鍵盤保護完成。

顯示範例

grep screen_toggled bugreport-2015-10-18-16-52-22.txt
10-18 15:05:04.383   992   992 I screen_toggled: 1
10-18 15:05:07.010   992   992 I screen_toggled: 0
10-18 15:23:15.063   992   992 I screen_toggled: 1
10-18 15:23:25.684   992   992 I screen_toggled: 0
10-18 15:36:31.623   992   992 I screen_toggled: 1
10-18 15:36:37.660  3283  3283 I screen_toggled: 2

錯誤報告也會納入與 Wake Lock 相關的統計資料；Wake Lock 是應用程式開發人員，指出應用程式需要的裝置搭載繼續保持。(如要進一步瞭解 Wake Lock，請參閱 PowerManager.WakeLock 和 Keep 例如 CPU)。

匯總 Wake Lock 持續時間統計資料「只會」追蹤那麼 Wake Lock 就其實是讓裝置保持喚醒狀態不要加入螢幕開啟的時間。此外，如果同時按住多個 Wake Lock，而 Wake Lock 的持續時間分散在 Wake Lock 中

如需進一步瞭解如何以圖表呈現電源狀態，請使用 Battery Historian Google 開放原始碼工具：運用 Android 錯誤報告分析電池消費者檔案。

套件

DUMP OF SERVICE package 區段包含應用程式版本 (以及資訊)。

顯示範例

...
DUMP OF SERVICE package:
...
Packages:
...
 Package [com.google.android.gms] (3cf534b):
   userId=10013
   sharedUser=SharedUserSetting{98f3d28 com.google.uid.shared/10013}
   pkg=Package{b8f6a41 com.google.android.gms}
   codePath=/system/priv-app/PrebuiltGmsCore
   resourcePath=/system/priv-app/PrebuiltGmsCore
   legacyNativeLibraryDir=/system/priv-app/PrebuiltGmsCore/lib
   primaryCpuAbi=arm64-v8a
   secondaryCpuAbi=armeabi-v7a
   versionCode=8186448 targetSdk=23
   versionName=8.1.86 (2287566-448)
   splits=[base]
   applicationInfo=ApplicationInfo{5158507 com.google.android.gms}
   flags=[ SYSTEM HAS_CODE ALLOW_CLEAR_USER_DATA ]
   privateFlags=[ PRIVILEGED ]
   dataDir=/data/user/0/com.google.android.gms
   supportsScreens=[small, medium, large, xlarge, resizeable, anyDensity]
   libraries:
     com.google.android.gms
   usesOptionalLibraries:
     com.android.location.provider
     com.google.android.ble
     com.android.media.remotedisplay
   usesLibraryFiles:
     /system/framework/com.android.media.remotedisplay.jar
     /system/framework/com.android.location.provider.jar
   timeStamp=2015-10-14 15:17:56
   firstInstallTime=2015-09-22 14:08:35
   lastUpdateTime=2015-10-14 15:17:56
   signatures=PackageSignatures{db63be6 [1af63d8]}
   installPermissionsFixed=true installStatus=1
   pkgFlags=[ SYSTEM HAS_CODE ALLOW_CLEAR_USER_DATA ]
   declared permissions:
     com.google.android.gms.permission.INTERNAL_BROADCAST: prot=signature, INSTALLED
     ...
     com.google.android.gms.permission.CAR_VENDOR_EXTENSION: prot=dangerous, INSTALLED
   User 0:  installed=true hidden=false stopped=false notLaunched=false enabled=0
     disabledComponents:
       com.google.android.gms.icing.service.PowerConnectedReceiver
       ...
       com.google.android.gms.icing.proxy.AppsMonitor
     enabledComponents:
       com.google.android.gms.mdm.receivers.GmsRegisteredReceiver
       ...
       com.google.android.gms.subscribedfeeds.SyncService

處理程序

錯誤報告包含開始和啟動等大量程序資料，停止時間、執行階段長度、關聯服務、oom_adj 分數等如要進一步瞭解 Android 如何管理程序，請參閱程序和 Threads

決定程序執行階段

「procstats」區段提供時間長度的完整統計資料個程序和相關服務都正在執行。快速、人類可讀摘要, 搜尋「AGGREGATED OVER」以查看最後三或 24 小時，再搜尋 Summary: 即可查看清單程序、程序在不同優先順序中的執行時間長度，以及 RAM 用量，格式為 min-平均-max PSS/min-average-max USS。

顯示範例

-------------------------------------------------------------------------------
DUMP OF SERVICE processinfo:
-------------------------------------------------------------------------------
DUMP OF SERVICE procstats:
COMMITTED STATS FROM 2015-10-19-23-54-56 (checked in):
...
COMMITTED STATS FROM 2015-10-20-03-00-00 (checked in):
...
CURRENT STATS:
...
AGGREGATED OVER LAST 24 HOURS:
System memory usage:
...
Per-Package Stats:
...
Summary:
...
  * com.google.android.gms.persistent / u0a13 / v8186448:
           TOTAL: 100% (21MB-27MB-40MB/20MB-24MB-38MB over 597)
             Top: 51% (22MB-26MB-38MB/21MB-24MB-36MB over 383)
          Imp Fg: 49% (21MB-27MB-40MB/20MB-25MB-38MB over 214)
…
          Start time: 2015-10-19 09:14:37
  Total elapsed time: +1d0h22m7s390ms (partial) libart.so

AGGREGATED OVER LAST 3 HOURS:
System memory usage:
...
Per-Package Stats:
...
Summary:
  * com.google.android.gms.persistent / u0a13 / v8186448:
           TOTAL: 100% (23MB-27MB-32MB/21MB-25MB-29MB over 111)
             Top: 61% (23MB-26MB-31MB/21MB-24MB-28MB over 67)
          Imp Fg: 39% (23MB-28MB-32MB/21MB-26MB-29MB over 44)
...
          Start time: 2015-10-20 06:49:24
  Total elapsed time: +2h46m59s736ms (partial) libart.so

程序執行的原因

dumpsys activity processes 部分會列出目前所有依 oom_adj 分數排序的執行程序 (Android 表示藉由指派 oom_adj 值給程序重要性，讓程序重要性都能由 ActivityManager 動態更新)。輸出結果與記憶體快照，但包含瞭解是什麼程序執行的相關資訊在下方範例中以粗體顯示的項目表示 gms.persistent 程序正在執行設為 vis (可見) 的優先順序，因為系統程序繫結至其 NetworkLocationService。

顯示範例

-------------------------------------------------------------------------------
ACTIVITY MANAGER RUNNING PROCESSES (dumpsys activity processes)
...
Process LRU list (sorted by oom_adj, 34 total, non-act at 14, non-svc at 14):
    PERS #33: sys   F/ /P  trm: 0 902:system/1000 (fixed)
    PERS #32: pers  F/ /P  trm: 0 2925:com.android.systemui/u0a27 (fixed)
    PERS #31: pers  F/ /P  trm: 0 3477:com.quicinc.cne.CNEService/1000 (fixed)
    PERS #30: pers  F/ /P  trm: 0 3484:com.android.nfc/1027 (fixed)
    PERS #29: pers  F/ /P  trm: 0 3502:com.qualcomm.qti.rcsbootstraputil/1001 (fixed)
    PERS #28: pers  F/ /P  trm: 0 3534:com.qualcomm.qti.rcsimsbootstraputil/1001 (fixed)
    PERS #27: pers  F/ /P  trm: 0 3553:com.android.phone/1001 (fixed)
    Proc #25: psvc  F/ /IF trm: 0 4951:com.android.bluetooth/1002 (service)
        com.android.bluetooth/.hfp.HeadsetService<=Proc{902:system/1000}
    Proc # 0: fore  F/A/T  trm: 0 3586:com.google.android.googlequicksearchbox/u0a29 (top-activity)
  Proc #26: vis   F/ /SB trm: 0 3374:com.google.android.googlequicksearchbox:interactor/u0a29 (service)
        com.google.android.googlequicksearchbox/com.google.android.voiceinteraction.GsaVoiceInteractionService<=Proc{902:system/1000}
    Proc # 5: vis   F/ /T  trm: 0 3745:com.google.android.gms.persistent/u0a12 (service)
        com.google.android.gms/com.google.android.location.network.NetworkLocationService<=Proc{902:system/1000}
    Proc # 3: vis   F/ /SB trm: 0 3279:com.google.android.gms/u0a12 (service)
        com.google.android.gms/.icing.service.IndexService<=Proc{947:com.google.android.googlequicksearchbox:search/u0a29}
    Proc # 2: vis   F/ /T  trm: 0 947:com.google.android.googlequicksearchbox:search/u0a29 (service)
        com.google.android.googlequicksearchbox/com.google.android.sidekick.main.remoteservice.GoogleNowRemoteService<=Proc{3586:com.google.android.googlequicksearchbox/u0a29}
    Proc # 1: vis   F/ /T  trm: 0 2981:com.google.process.gapps/u0a12 (service)
        com.google.android.gms/.tapandpay.hce.service.TpHceService<=Proc{3484:com.android.nfc/1027}
    Proc #11: prcp  B/ /IB trm: 0 3392:com.google.android.inputmethod.latin/u0a64 (service)
        com.google.android.inputmethod.latin/com.android.inputmethod.latin.LatinIME<=Proc{902:system/1000}
    Proc #24: svc   B/ /S  trm: 0 27071:com.google.android.music:main/u0a67 (started-services)
    Proc #22: svc   B/ /S  trm: 0 853:com.qualcomm.qcrilmsgtunnel/1001 (started-services)
    Proc # 4: prev  B/ /LA trm: 0 32734:com.google.android.GoogleCamera/u0a53 (previous)
    Proc #23: svcb  B/ /S  trm: 0 671:com.qualcomm.telephony/1000 (started-services)
    Proc #20: cch   B/ /CE trm: 0 27659:com.android.providers.calendar/u0a2 (provider)
        com.android.providers.calendar/.CalendarProvider2<=Proc{27697:com.google.android.calendar/u0a40}
    Proc #13: cch   B/ /CE trm: 0 653:com.google.android.gms.wearable/u0a12 (cch-empty)
    Proc #10: cch   B/ /S  trm: 0 4067:com.google.android.talk/u0a62 (cch-started-ui-services)
    Proc # 6: cch   B/ /CA trm: 0 27697:com.google.android.calendar/u0a40 (cch-act)
    Proc # 8: cch+1 B/ /CA trm: 0 25675:com.google.android.apps.genie.geniewidget/u0a81 (cch-act)
    Proc #16: cch+2 B/ /CE trm: 0 1272:com.google.android.keep/u0a106 (cch-empty)
    Proc #15: cch+2 B/ /CE trm: 0 885:android.process.media/u0a9 (cch-empty)
    Proc #14: cch+2 B/ /CE trm: 0 15146:android.process.acore/u0a3 (cch-empty)
    Proc # 9: cch+3 B/ /CA trm: 0 17016:com.google.android.gm/u0a79 (cch-act)
    Proc #19: cch+4 B/ /CE trm: 0 973:com.google.android.apps.maps/u0a66 (cch-empty)
    Proc #18: cch+4 B/ /CE trm: 0 1091:com.google.android.apps.photos/u0a71 (cch-empty)
    Proc #17: cch+4 B/ /CE trm: 0 1141:com.google.android.apps.plus/u0a74 (cch-empty)
    Proc #12: cch+5 B/ /CA trm: 0 22299:com.google.android.apps.dogfood/u0a105 (cch-act)
    Proc #21: cch+6 B/ /CE trm: 0 995:com.google.android.partnersetup/u0a18 (cch-empty)>

掃描

請按照下列步驟找出執行過多效能的應用程式藍牙低功耗 (BLE) 掃描：

尋找 BluetoothLeScanner 的記錄訊息：

$ grep 'BluetoothLeScanner' ~/downloads/bugreport.txt
07-28 15:55:19.090 24840 24851 D BluetoothLeScanner: onClientRegistered() - status=0 clientIf=5

在記錄訊息中找出 PID。在這個範例中，「24840」和「24851」是 PID (程序 ID) 和 TID (執行緒 ID)。
找出與 PID 相關聯的應用程式：
```
PID #24840: ProcessRecord{4fe996a 24840:com.badapp/u0a105}
```
在此範例中，套件名稱為 com.badapp。
在 Google Play 上查詢套件名稱，找出負責的應用程式： https://play.google.com/store/apps/details?id=com.badapp。

注意：在搭載 Android 7.0 的裝置上，系統會收集資料以進行 BLE 掃描，建立這些活動的關聯發出提示詳情請參閱低功耗 (LE) 和藍牙掃描功能