Profiling Native Code in React Native with Tracy
Article Summary
Profiling React Native apps just got a serious upgrade. Tracy, the real-time profiler that game developers swear by, now works seamlessly with React Native's native layer.
Callstack's engineering team shows how to integrate Tracy profiler into React Native projects to visualize native code performance. This deep dive covers everything from initial setup to instrumenting custom native modules and analyzing frame-by-frame execution.
Key Takeaways
- Tracy provides microsecond-level timing data with minimal overhead
- Works across iOS and Android native code simultaneously
- Visualizes thread interactions and identifies native bottlenecks instantly
- Integrates with TurboModules and custom JSI bindings
Critical Insight
Tracy gives React Native developers the same profiling power that AAA game studios use to optimize performance-critical code.
