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 benchmark:
Build sky_shell for Linux Release using the instructions in the Engine repository.
Run pub get in the packages/unit directory.
Run the benchmarks by running the following command from the root of the flutter repository (replacing stocks/layout_bench.dart with the path to whichever benchmark you want to run):
/path/to/engine/src/out/Release/sky_shell packages/unit/benchmark/stocks/layout_bench.dart --package-root=packages/unit/packages