# platform_views_layout_hybrid_composition ## Scrolling benchmark To run the scrolling benchmark on a device: ``` flutter drive --profile test_driver/scroll_perf.dart ``` Results should be in the file `build/platform_views_scroll_perf_hybrid_composition.timeline_summary.json`. More detailed logs should be in `build/platform_views_scroll_perf_hybrid_composition.timeline.json`. ## Startup benchmark To measure startup time on a device: ``` flutter run --profile --trace-startup ``` Results should be in the logs. Additional results should be in the file `build/start_up_info.json`.