# platform_views_layout_hybrid_composition## Scrolling benchmarkTo 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 benchmarkTo 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`.