Measuring
Performance
About me
Alexandre Moureaux
Tech Lead @
Part of
60FPS: the Grail of Perf?
- FAST enough for good perceived smoothness
- Less perceived benefits in higher numbers
- Frame rate should be constant
What
about
React Native
JS thread is important
RN Perf Monitor
Perf Monitor Flipper plugin
It might not fit all use cases
- Your app might be running at 60fps but struggling to do so
- What if you want to compare your app's performance with competitors?
- What if you want to ensure no performance regression after a big rearchitecture (Fabric...)
Measuring CPU Usage
-
Easy to measure on Android
-
Completely objective
-
Directly correlates to RN performance
- 0 JS FPS = 100% CPU Usage
Show Time
What's next
-
Objectively compare framework performance
-
e2e performance testing
- Lighthouse for mobile apps is getting closer
Thank you!
:
)
RN London Meetup April 2022 - Performance
By Alexandre Moureaux
