dumpsys命令

• 参考http://blog.csdn.net/zhangjg_blog/article/details/39852309
• dumpsys命令是android手机自带的调试工具，下面详解讲解dumpsys用法
• 该命令打印出的是系统当前的所有正在运行的服务的信息。从中可以看到我们常见的一些服务。 activity表示的是ActivityManagerService,用于管理应用程序的四大组件， appops表示的是AppOpsManagerService, 用于管理和配置权限。window表示的是WindowManagerService, 用于管理系统中的窗口， account表示的是AccountManagerService，用于管理系统中的账户信息。
  

一. 初识dumpsys

adb shell                         //进入手机shelldumpsys | grep "DUMP OF SERVICE"  //列举当前手机所有支持的dumpsys命令
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运行上面指令，结果（不同手机结果会有所差异）

DUMP OF SERVICE AppIconThemeServices:DUMP OF SERVICE AtCmdFwd:DUMP OF SERVICE DockObserver:DUMP OF SERVICE SurfaceFlinger:DUMP OF SERVICE accessibility:DUMP OF SERVICE account:DUMP OF SERVICE activity:DUMP OF SERVICE alarm:DUMP OF SERVICE android.security.keystore:DUMP OF SERVICE appops:DUMP OF SERVICE appwidget:DUMP OF SERVICE assetatlas:DUMP OF SERVICE audio:DUMP OF SERVICE backup:DUMP OF SERVICE battery:DUMP OF SERVICE batteryproperties:DUMP OF SERVICE batterystats:DUMP OF SERVICE bluetooth_manager:DUMP OF SERVICE clipboard:DUMP OF SERVICE com.broadcom.nfc.Factory:DUMP OF SERVICE com.qualcomm.qti.auth.fidocryptodaemon:DUMP OF SERVICE commontime_management:DUMP OF SERVICE connectivity:DUMP OF SERVICE consumer_ir:DUMP OF SERVICE content:DUMP OF SERVICE country_detector:DUMP OF SERVICE cpuinfo:DUMP OF SERVICE dbinfo:DUMP OF SERVICE device_policy:DUMP OF SERVICE devicestoragemonitor:DUMP OF SERVICE diskstats:DUMP OF SERVICE display:DUMP OF SERVICE display.qservice:DUMP OF SERVICE dreams:DUMP OF SERVICE drm.drmManager:DUMP OF SERVICE dropbox:DUMP OF SERVICE entropy:DUMP OF SERVICE fingerprint:DUMP OF SERVICE fm_fingerprint_service:DUMP OF SERVICE gfxinfo:DUMP OF SERVICE hardware:DUMP OF SERVICE imms:DUMP OF SERVICE ims:DUMP OF SERVICE input:DUMP OF SERVICE input_method:DUMP OF SERVICE iphonesubinfo:DUMP OF SERVICE isms:DUMP OF SERVICE isub:DUMP OF SERVICE jobscheduler:DUMP OF SERVICE karaoke:DUMP OF SERVICE launcherapps:DUMP OF SERVICE lenovopermission:DUMP OF SERVICE location:DUMP OF SERVICE lock_settings:DUMP OF SERVICE media.audio_flinger:DUMP OF SERVICE media.audio_policy:DUMP OF SERVICE media.camera:DUMP OF SERVICE media.player:DUMP OF SERVICE media.sound_trigger_hw:DUMP OF SERVICE media_projection:DUMP OF SERVICE media_router:DUMP OF SERVICE media_session:DUMP OF SERVICE meminfo:DUMP OF SERVICE mount:DUMP OF SERVICE netpolicy:DUMP OF SERVICE netstats:DUMP OF SERVICE network_management:DUMP OF SERVICE network_score:DUMP OF SERVICE nfc:DUMP OF SERVICE notification:DUMP OF SERVICE package:rUMP OF SERVICE permission:DUMP OF SERVICE phone:DUMP OF SERVICE power:DUMP OF SERVICE print:DUMP OF SERVICE procstats:DUMP OF SERVICE qti.ims.connectionmanagerservice:DUMP OF SERVICE restrictions:DUMP OF SERVICE rttmanager:DUMP OF SERVICE samplingprofiler:DUMP OF SERVICE scheduling_policy:DUMP OF SERVICE search:DUMP OF SERVICE sensorservice:DUMP OF SERVICE serial:DUMP OF SERVICE servicediscovery:DUMP OF SERVICE simphonebook:DUMP OF SERVICE sip:DUMP OF SERVICE start_shutdown:DUMP OF SERVICE statusbar:DUMP OF SERVICE telecom:DUMP OF SERVICE telephony.registry:DUMP OF SERVICE textservices:DUMP OF SERVICE trust:DUMP OF SERVICE uimode:DUMP OF SERVICE updatelock:DUMP OF SERVICE usagestats:DUMP OF SERVICE usb:DUMP OF SERVICE user:DUMP OF SERVICE vendor.qcom.PeripheralManager:DUMP OF SERVICE vibrator:DUMP OF SERVICE voiceinteraction:DUMP OF SERVICE wallpaper:DUMP OF SERVICE wbc_service:DUMP OF SERVICE webviewupdate:DUMP OF SERVICE wfdservice:DUMP OF SERVICE wifi:DUMP OF SERVICE wifip2p:DUMP OF SERVICE wifiscanner:DUMP OF SERVICE window:
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二. dumpsys用法

（1）前面输入每一行都是都可以组成一条dumpsys指令。例如：DUMP OF SERVICE meminfo

dumpsys meminfo    //输出当前所有memory相关的信息
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（2）当我们想查看具体某个应用的内存使用情况，例如QQ：

dumpsys meminfo com.tencent.mobileqq
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运行结果：

Applications Memory Usage (kB):Uptime: 7382804 Realtime: 7382804** MEMINFO in pid 22590 [com.tencent.mobileqq] **                   Pss  Private  Private  Swapped     Heap     Heap     Heap                 Total    Dirty    Clean    Dirty     Size    Alloc     Free                ------   ------   ------   ------   ------   ------   ------  Native Heap     8701     8416        0        0    16384    10626     5757  Dalvik Heap    10247     6548        0        0    37655    22685    14970 Dalvik Other      633      632        0        0        Stack      820      820        0        0      Gfx dev       68       68        0        0    Other dev       25        0       24        0     .so mmap     5365      164     3236        0    .apk mmap      564        0      360        0    .ttf mmap      378        0       60        0    .dex mmap     5690        0     4368        0    .oat mmap     2711        0      272        0    .art mmap     2825     1596       12        0   Other mmap       52        4        0        0      Unknown      151      140        0        0        TOTAL    38230    18388     8332        0    54039    33311    20727 Objects               Views:        8         ViewRootImpl:        1         AppContexts:        3           Activities:        1              Assets:        3        AssetManagers:        3       Local Binders:       23        Proxy Binders:       23       Parcel memory:        9         Parcel count:       39    Death Recipients:        2      OpenSSL Sockets:        0 SQL         MEMORY_USED:        0  PAGECACHE_OVERFLOW:        0          MALLOC_SIZE:       62
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（3）帮助信息

dumpsys meminfo -h  //此处以meminfo为例，其他指令也是类同
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运行结果

meminfo dump options: [-a] [-d] [-c] [--oom] [process]  -a: include all available information for each process.  -d: include dalvik details when dumping process details.  -c: dump in a compact machine-parseable representation.  --oom: only show processes organized by oom adj.  --local: only collect details locally, don't call process.  --package: interpret process arg as package, dumping all             processes that have loaded that package.If [process] is specified it can be the name orpid of a specific process to dump.
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三. dumpsys常用指令

dumpsys指令很多， 下面列举一些常用的dumpsys指令的功能

 dumpsys package  <package_name>   //查看指定包名的信息 dumpsys activity <package_name>  //查看指定包名的activity信息 dumpsys alarm      //查看Alarm信息 dumpsys audio      //查看声音信息 dumpsys battery    //查看电池信息 dumpsys cpuinfo //查看CPU信息 dumpsys meminfo  <package_name>//查看指定包名的内存信息 dumpsys netstats//查看网络统计信息 dumpsys diskstats   //查看空间free状态 dumpsys jobscheduler   //查看任务计划 dumpsys power//查看功耗信息 dumpsys wifi//查看wifi信息