Android 性能分析工具dumpsys的使用 http://blog.csdn.net/androiddevelop/article/details/37689339
adb logcat -v threadtime -b events,在结果中查找到 activity_launch_time,取第一个时间
adb shell am start -W -n packageMame/mainactivity
adb shell dumpsys meminfo
adb shell dumpsys cpuinfo
adb shell dumpsys cpuinfo packName
adb shell top| grep package name(linux环境)
adb shell top|findstr package name (windows环境)
先操作手机,然后adb shell dumpsys gfxinfo packageName,得到三列