# Tracking Wall Clock, On-CPU, and Off-CPU Time for Android Performance

DevFeed: [Tracking Wall Clock, On-CPU, and Off-CPU Time for Android Performance](<https://devfeed.tech/articles/the-three-musketeers-of-time-28540.md>)

Original publisher: [Read original article](<https://www.amanjeet.me/three-musketeers-of-time/>)

Author: Amanjeet Singh Gurtatta

Published: 2021-07-18T21:35:43Z

Content type: tutorial

Language: en

Sources: [Amanjeet Singh](<https://devfeed.tech/sources/amanjeet-singh.md>)

Topics: [Android](<https://devfeed.tech/topics/android.md>), [Process](<https://devfeed.tech/topics/process.md>), [cpu](<https://devfeed.tech/topics/cpu.md>)

Tags: [android](<https://devfeed.tech/tags/android.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [cpu-time](<https://devfeed.tech/tags/cpu-time.md>), [mobile-performance](<https://devfeed.tech/tags/mobile-performance.md>), [off-cpu-time](<https://devfeed.tech/tags/off-cpu-time.md>), [performance](<https://devfeed.tech/tags/performance.md>), [regression](<https://devfeed.tech/tags/regression.md>), [wall-clock-time](<https://devfeed.tech/tags/wall-clock-time.md>)

## AI overview

This Android performance tutorial explains wall-clock, on-CPU, and off-CPU time, including how to measure them at the process or thread level and how to choose an appropriate monotonic clock API.

## Source excerpt

The post talks about the different types of time to look for: wall clock time, on CPU time and off CPU time