adb shell dumpsys

dumps system data

adb shell dumpsys [options]

adb shell dumpsys

adb shell dumpsys meminfo

adb shell dumpsys battery
Notes: A mobile device with Developer Options enabled running Android 5.0 or higher.
adb shell dumpsys batterystats collects battery data from your device
Notes: Battery Historian converts that data into an HTML visualization. STEP 1 adb shell dumpsys batterystats > batterystats.txt STEP 2 python historian.py batterystats.txt > batterystats.html
adb shell dumpsys batterystats --reset erases old collection data

adb shell dumpsys activity

adb shell dumpsys gfxinfo com.android.phone measuring com.android.phone ui performance