30 lines
960 B
Markdown
30 lines
960 B
Markdown
# microbenchmarks
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To run these benchmarks on a device, first run `flutter logs` in one
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window to see the device logs, then, in a different window, run:
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```sh
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flutter run -d $DEVICE_ID --profile lib/benchmark_collection.dart
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```
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To run a subset of tests:
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```shell
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flutter run -d $DEVICE_ID --profile lib/benchmark_collection.dart --dart-define=tests=foundation/change_notifier_bench.dart,language/sync_star_bench.dart
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```
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To specify a seed value for shuffling tests:
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```shell
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flutter run -d $DEVICE_ID --profile lib/benchmark_collection.dart --dart-define=seed=12345
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```
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The results should be in the device logs.
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## Avoid changing names of the benchmarks
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Each microbenchmark is identified by a name, for example,
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"catmullrom_transform_iteration". Changing the name passed to `BenchmarkResultPrinter.addResult`
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will effectively remove the old benchmark and create a new one,
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losing the historical data associated with the old benchmark in the process.
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