Android 性能分析工具dumpsys的使用(自己增加一部分在后面)

Android提供的dumpsys工具可以用于查看感兴趣的系统服务信息与状态，手机连接电脑后可以直接命令行执行adb shell dumpsys 查看所有支持的Service但是这样输出的太多，可以通过dumpsys | grep "DUMP OF SERVICE" 仅显示主要的Service的信息

一、列出dumpsys所有支持命令

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1 2	> adb shell  $ dumpsys | grep "DUMP OF SERVICE"

以下是在三星S3手机上的输出信息

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C:WindowsSystem32>adb shell  shell@m:/ $ dumpsys | grep "DUMP OF SERVICE"  dumpsys | grep "DUMP OF SERVICE"  DUMP OF SERVICE AtCmdFwd:  DUMP OF SERVICE CustomFrequencyManagerService:  DUMP OF SERVICE DirEncryptService:  DUMP OF SERVICE Exynos.HWCService:  DUMP OF SERVICE Exynos.IPService:  DUMP OF SERVICE FMPlayer:  DUMP OF SERVICE LEDService:  DUMP OF SERVICE SecTVOutService:  DUMP OF SERVICE SurfaceFlinger:  DUMP OF SERVICE TvoutService_C:  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 application_policy:  DUMP OF SERVICE appops:  DUMP OF SERVICE appwidget:  DUMP OF SERVICE audio:  DUMP OF SERVICE backup:  DUMP OF SERVICE battery:  DUMP OF SERVICE batteryinfo:  DUMP OF SERVICE bluetooth_manager:  DUMP OF SERVICE bluetooth_secure_mode_manager:  DUMP OF SERVICE clipboard:  DUMP OF SERVICE clipboardEx:  DUMP OF SERVICE commontime_management:  DUMP OF SERVICE connectivity:  DUMP OF SERVICE container_service:  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 dreams:  DUMP OF SERVICE drm.drmManager:  DUMP OF SERVICE dropbox:  DUMP OF SERVICE edmnativehelper:  DUMP OF SERVICE enterprise_license_policy:  DUMP OF SERVICE enterprise_policy:  DUMP OF SERVICE entropy:  DUMP OF SERVICE gfxinfo:  DUMP OF SERVICE hardware:  DUMP OF SERVICE harmony_eas_service:  DUMP OF SERVICE input:  DUMP OF SERVICE input_method:  DUMP OF SERVICE iphonesubinfo:  DUMP OF SERVICE isms:  DUMP OF SERVICE license_log_service:  DUMP OF SERVICE location:  DUMP OF SERVICE lock_settings:  DUMP OF SERVICE log_manager_service:  DUMP OF SERVICE mdm.remotedesktop:  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 meminfo:  DUMP OF SERVICE motion_recognition:  DUMP OF SERVICE mount:  DUMP OF SERVICE multiwindow:  DUMP OF SERVICE netpolicy:  DUMP OF SERVICE netstats:  DUMP OF SERVICE network_management:  DUMP OF SERVICE nfc:  DUMP OF SERVICE nfccontroller:  DUMP OF SERVICE notification:  DUMP OF SERVICE package:  DUMP OF SERVICE permission:  DUMP OF SERVICE phone:  DUMP OF SERVICE phone_restriction_policy:  DUMP OF SERVICE phoneext:  DUMP OF SERVICE power:  DUMP OF SERVICE remoteinjection:  DUMP OF SERVICE samplingprofiler:  DUMP OF SERVICE samsung.smartfaceservice:  DUMP OF SERVICE scheduling_policy:  DUMP OF SERVICE search:  DUMP OF SERVICE sec_analytics:  DUMP OF SERVICE secontroller:  DUMP OF SERVICE sensorservice:  DUMP OF SERVICE serial:  DUMP OF SERVICE servicediscovery:  DUMP OF SERVICE simphonebook:  DUMP OF SERVICE sip:  DUMP OF SERVICE statusbar:  DUMP OF SERVICE telephony.registry:  DUMP OF SERVICE textservices:  DUMP OF SERVICE tvoutservice:  DUMP OF SERVICE uimode:  DUMP OF SERVICE updatelock:  DUMP OF SERVICE usagestats:  DUMP OF SERVICE usb:  DUMP OF SERVICE user:  DUMP OF SERVICE vibrator:  DUMP OF SERVICE voip:  DUMP OF SERVICE wallpaper:  DUMP OF SERVICE wfd:  DUMP OF SERVICE wifi:  DUMP OF SERVICE wifi_policy:  DUMP OF SERVICE wifip2p:  DUMP OF SERVICE window:

二、具体命令如何查看帮助

从上面可以看出Service非常多，“DUMP OF SERVICE”关键字后面的单词都可以直接通过 dumpsys + 单词 查看相关信息，具体每一个如何使用有一种通用的查看帮助的办法。

查看每一个命令的使用帮助，以下以meminfo 为例演示：

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shell@m:/ $ dumpsys meminfo -h  dumpsys meminfo -h  meminfo dump options: [-a] [--oom] [process]    -a: include all available information for each process.    --oom: only show processes organized by oom adj.  If [process] is specified it can be the name or  pid of a specific process to dump.

三、一些关键命令解释

名字	功能
account	显示accounts信息
activity	显示所有的activities的信息
cpuinfo	显示CPU信息
window	显示键盘，窗口和它们的关系
wifi	显示wifi信息
batteryinfo $package_name	电量信息及CPU 使用时长
package packagename	获取安装包信息
usagestats	每个界面启动的时间
statusbar	显示状态栏相关的信息
meminfo	内存信息（meminfo $package_name or $pid  使用程序的包名或者进程id显示内存信息）
diskstats	磁盘相关信息
battery	电池信息
alarm	显示Alarm信息

activity  - 使用adb shell dumpsys检测Android的Activity任务栈

window - 通过adb shell dumpsys命令获取当前应用的component

statusbar - 找出广告通知属于哪个应用

    dumpsys statusbar | grep notification=Notification 

也可以单独列出某个系统服务的，比如battery，命令：dumpsys battery，如果想知道具体可以做哪些操作可：dumpsys battery -h来查看，比如我们想设置电量百分比，可以

dumpsys battery set level 5。