Deeper Performance Considerations
Article Summary
Ben Weiss, Breana Tate, and Jossi Wolf from Google just dropped a performance goldmine: Trello cut startup time by 25%, and Meta saw improvements up to 40%. All from one optimization technique most teams haven't implemented yet.
This is Day 3 of Android's Performance Spotlight Week, covering Profile Guided Optimization (Baseline and Startup Profiles), Jetpack Compose 1.9/1.10 performance wins, and background work debugging strategies. The Google team shares real-world case studies and practical implementation guidance.
Key Takeaways
- Baseline Profiles reduced Trello startup by 25% and Meta apps by up to 40%
- Compose 1.10 dropped scroll jank to 0.2% with pausable composition and cache windows
- Background Task Inspector and Perfetto help debug WorkManager wake lock issues
- Startup Profiles optimize dex file loading order for faster app launches
- New text prefetching API offloads layout work to background threads
Critical Insight
Profile Guided Optimization delivers measurable startup improvements (25-40%) while new Compose features virtually eliminate scroll jank, but implementation requires macrobenchmark tests and measurement discipline.
