README.md

Profile benchmarks

Run the map interaction benchmarks against the Windows profile engine:

powershell
1flutter drive `
2 --driver=test_driver/performance_test.dart `
3 --target=integration_test/map_drag_performance_test.dart `
4 --profile `
5 -d windows

The run prints a compact PERF_RESULT line and writes the complete report to build/map_drag_performance.json.

Compare builds using the same machine, viewport, Flutter version, and power state. The Windows engine can report zero-valued raster durations through FrameTiming; build-time percentiles remain valid, but use DevTools timeline traces when raster-thread timing is required.