Automated Android Perf Testing
Anup Cowkur
What is performance?
-
Battery Life -
Network request speed -
DB access speed -
UI responsiveness - most visible to user and hence most important
What is Jank?
Jank is any stuttering, juddering or just plain halting that users see when an app isn't keeping up with the refresh rate.
What's refresh rate?
For most devices today, the screen will refresh 60 times a second, or 60Hz. If there is some motion on screen (such as scrolling, transitions, or animations) an app should create 60 frames per second.
16ms render time per frame
1000 milliseconds/60 frames ~ 16ms
On screen gsxinfo
Systrace
Automating jank testing with Espresso and dumpsys gfxinfo
dumpsys wifi
dumpsys battery
dumpsys cpuinfo
dumpsys meminfo
