Enhancing Jetpack Compose App Performance:Tools, Strategies and Optimizations
summary
Use Jetpack Macrobenchmark and Perfetto-backed composition tracing to measure real user-facing metrics: startup and frame timing, trace-section durations and counts. Enabling R8 yields about 11% improvement vs defaults and generating custom baseline profiles can reach a 27% difference; stale profiles cut JIT vs none and updated profiles reduce JIT by ~8x from ~500ms. Composition tracing plus trace-section metrics surfaces hot spots (example: 360 recompositions during a scroll). Migrate heavy modifier code (moving to modifier.note >80% wins in some cases), defer compositing with drawBehind, and load big images asynchronously.
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chapters (10)
- 0:00Introduction and setup
- 1:29Measuring performance first
- 3:58Using Jetpack Microbenchmark
- 13:11Debugging with system tracing
- 24:34Updating Compose and baseline profiles
- 26:23Deferring state changes
- 28:49Avoiding BoxWithConstraints overhead
- 31:21Migrating custom modifiers
- 32:05Heavy operations and images
- 33:54Splitting heavy frames
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