How to view CPU usage of apps or processes on Android?
The live CPU usage widget (Developer options -> Monitoring -> Show CPU usage) was removed in Android 7.1. And there is no built-in tool in Android to monitor CPU usage. But sometimes it becomes necessary to find out the CPU hog which is killing device resources and slowing down the device.
WhatsRunning is your companion here. The screenshots below show the age of the process, the time it has spent while using CPU, and the ratio of both figures (the percentage usage).
Process list can be sorted by "CPU usage" or "CPU impact" to identify the culprits easily. See What's the difference between "CPU Usage" and "CPU Impact" in sorting?
To track the CPU usage of an app or process which is frequently killed and restarted, the app offers Process Watcher feature.
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