This directory (and its sub-directories) contain benchmarks for Flutter. The reporting format for benchmarks is not standardized yet, so benchmarks here are typically run by hand. To run a particular benchmark, use a command similar to that used to run individual unit tests. For example:
sky/tools/run_tests --debug -r expanded benchmark/gestures/velocity_tracker_bench.dart
(The -r expanded
flag prints one line per test, which can be more helpful than the default format when running individual tests.)