Measure What Matters with Jetpack Benchmark (Lightning)
summary
Uses Jetpack Benchmark to measure real interactions on the OLX app: scrolling and randomized clicks across a mock dataset, with output in nanoseconds and a JSON report. Setup requires Android Studio 3.5 beta, a separate benchmark module, disabling debugging and handling multidex and Firebase hacks. Integrates into GitLab CI to run on an emulator, parse medians and fail builds if a hard threshold (about 138000 ns, 10% delta) is exceeded. Measured opening an ad at 18 ms average; required modularizing code to make benchmarks stable.
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chapters (9)
- 0:00Introduction to Jetpack Benchmark
- 1:59Setting up Jetpack Benchmark
- 4:06First benchmark measurements
- 7:37Understanding benchmark warnings
- 10:34GitLab CI integration
- 12:17Lessons learned from mistakes
- 14:24Live benchmark demo
- 16:34Key takeaways and next steps
- 18:01Resources and closing
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