什么是Android ADB shell"dumpsys"工具,它有什么好处？

Question

我正在寻找ADB shell dumpsys命令的完整列表,其中包含所有命令的完整说明.

我在哪里可以找到这些信息？

Answer 1

什么是dumpsys以及它的好处是什么

dumpsys是一个在设备上运行的android工具,它会转储有关系统服务状态的有趣信息.

明显的好处:

1. 可以通过简单的字符串表示轻松获取系统信息.
2. 可以使用倾销的CPU,RAM,电池,存储统计数据来获取漂亮的图表,这样您就可以检查应用程序如何影响整个设备!

我们可以从dumpsys shell命令中检索哪些信息以及我们如何使用它

如果你运行dumpsys,你会看到大量的系统信息.但是你只能使用这个大转储的单独部分.

看到dumpsys的所有"子命令":

dumpsys | grep "DUMP OF SERVICE"

输出:

DUMP OF SERVICE SurfaceFlinger:
DUMP OF SERVICE accessibility:
DUMP OF SERVICE account:
DUMP OF SERVICE activity:
DUMP OF SERVICE alarm:
DUMP OF SERVICE appwidget:
DUMP OF SERVICE audio:
DUMP OF SERVICE backup:
DUMP OF SERVICE battery:
DUMP OF SERVICE batteryinfo:
DUMP OF SERVICE clipboard:
DUMP OF SERVICE connectivity:
DUMP OF SERVICE content:
DUMP OF SERVICE cpuinfo:
DUMP OF SERVICE device_policy:
DUMP OF SERVICE devicestoragemonitor:
DUMP OF SERVICE diskstats:
DUMP OF SERVICE dropbox:
DUMP OF SERVICE entropy:
DUMP OF SERVICE hardware:
DUMP OF SERVICE input_method:
DUMP OF SERVICE iphonesubinfo:
DUMP OF SERVICE isms:
DUMP OF SERVICE location:
DUMP OF SERVICE media.audio_flinger:
DUMP OF SERVICE media.audio_policy:
DUMP OF SERVICE media.player:
DUMP OF SERVICE meminfo:
DUMP OF SERVICE mount:
DUMP OF SERVICE netstat:
DUMP OF SERVICE network_management:
DUMP OF SERVICE notification:
DUMP OF SERVICE package:
DUMP OF SERVICE permission:
DUMP OF SERVICE phone:
DUMP OF SERVICE power:
DUMP OF SERVICE reboot:
DUMP OF SERVICE screenshot:
DUMP OF SERVICE search:
DUMP OF SERVICE sensor:
DUMP OF SERVICE simphonebook:
DUMP OF SERVICE statusbar:
DUMP OF SERVICE telephony.registry:
DUMP OF SERVICE throttle:
DUMP OF SERVICE usagestats:
DUMP OF SERVICE vibrator:
DUMP OF SERVICE wallpaper:
DUMP OF SERVICE wifi:
DUMP OF SERVICE window:

一些倾倒示例和输出

1)获得所有可能的电池统计信息:

$~ adb shell dumpsys battery

你会得到输出:

Current Battery Service state:
AC powered: false
AC capacity: 500000
USB powered: true
status: 5
health: 2
present: true
level: 100
scale: 100
voltage:4201
temperature: 271 <---------- Battery temperature! %)
technology: Li-poly <---------- Battery technology! %)

2)获取wifi信息

~$ adb shell dumpsys wifi

输出:

Wi-Fi is enabled
Stay-awake conditions: 3

Internal state:
interface tiwlan0 runState=Running
SSID: XXXXXXX BSSID: xx:xx:xx:xx:xx:xx, MAC: xx:xx:xx:xx:xx:xx, Supplicant state: COMPLETED, RSSI: -60, Link speed: 54, Net ID: 2, security: 0, idStr: null
ipaddr 192.168.1.xxx gateway 192.168.x.x netmask 255.255.255.0 dns1 192.168.x.x dns2 8.8.8.8 DHCP server 192.168.x.x lease 604800 seconds
haveIpAddress=true, obtainingIpAddress=false, scanModeActive=false
lastSignalLevel=2, explicitlyDisabled=false

Latest scan results:

Locks acquired: 28 full, 0 scan
Locks released: 28 full, 0 scan

Locks held:

3)获取CPU信息

~$ adb shell dumpsys cpuinfo

输出:

Load: 0.08 / 0.4 / 0.64
CPU usage from 42816ms to 34683ms ago:
system_server: 1% = 1% user + 0% kernel / faults: 16 minor
kdebuglog.sh: 0% = 0% user + 0% kernel / faults: 160 minor
tiwlan_wq: 0% = 0% user + 0% kernel
usb_mass_storag: 0% = 0% user + 0% kernel
pvr_workqueue: 0% = 0% user + 0% kernel
+sleep: 0% = 0% user + 0% kernel
+sleep: 0% = 0% user + 0% kernel
TOTAL: 6% = 1% user + 3% kernel + 0% irq

4)获取内存使用信息

~$ adb shell dumpsys meminfo 'your apps package name'

输出:

** MEMINFO in pid 5527 [com.sec.android.widgetapp.weatherclock] **
                    native   dalvik    other    total
            size:     2868     5767      N/A     8635
       allocated:     2861     2891      N/A     5752
            free:        6     2876      N/A     2882
           (Pss):      532       80     2479     3091
  (shared dirty):      932     2004     6060     8996
    (priv dirty):      512       36     1872     2420

 Objects
           Views:        0        ViewRoots:        0
     AppContexts:        0       Activities:        0
          Assets:        3    AssetManagers:        3
   Local Binders:        2    Proxy Binders:        8
Death Recipients:        0
 OpenSSL Sockets:        0


 SQL
               heap:        0         MEMORY_USED:        0
 PAGECACHE_OVERFLOW:        0         MALLOC_SIZE:        0

如果要查看所有进程的信息,请使用 ~$ adb shell dumpsys meminfo

dumpsys最终是灵活而有用的工具!

如果您想使用此工具,请不要忘记自动向您的Android清单添加权限 android.permission.DUMP

尝试测试所有命令以了解有关dumpsys的更多信息.快乐的倾销!

Answer 2

查看dumpsys和service的源代码,您可以通过执行以下命令获取可用服务列表:

adb shell service list

然后,您可以将您感兴趣的服务名称提供给dumpsys以获取特定信息.例如(请注意,并非所有服务都提供转储信息):

adb shell dumpsys activity
adb shell dumpsys cpuinfo
adb shell dumpsys battery

正如您在代码中看到的那样(以及在K_Anas的答案中),如果您调用dumpsys而没有任何服务名称,它将在一个大转储中转储所有服务的信息:

adb shell dumpsys

如果提供了-h参数,某些服务可以接收有关通常解释的内容的其他参数,例如:

adb shell dumpsys activity -h
adb shell dumpsys window -h
adb shell dumpsys meminfo -h
adb shell dumpsys package -h
adb shell dumpsys batteryinfo -h

Answer 3

根据有关dumpsys的官方Android信息:

该dumpsys工具在设备上运行,并提供有关的系统服务的状态信息.

获取可用服务列表

adb shell dumpsys -l