Low effort, High impact Android performance wins
summary
Shows concrete wins: enabling the R8 optimizer yields real numbers — a partner sees 40% faster cold startups, 30% fewer ANRs, 25% better rendering and 14% smaller APKs; a demo app improves startup ~30% and rendering ~23% just by removing a legacy flag. Covers how to write narrow keep rules, avoid global options like dontoptimize, use AGP9 lint warnings, auto-retrace logcat with local mapping, and combine profile-guided optimization and Macrobenchmark to measure and reproduce improvements on real devices.
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chapters (8)
- 0:00Introduction
- 2:12Why optimizing matters
- 8:32R8 optimizer transforms performance
- 14:52Debugging R8 crashes
- 26:16Optimizing dependencies
- 28:25Measuring improvements
- 35:48Baseline profiles final optimizations
- 37:12Q&A
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