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# SwiftPM Benchmarks
Benchmarks currently use [ordo-one/package-benchmark](https://github.com/ordo-one/package-benchmark) library for
benchmarking.
## How to Run
To run the benchmarks in their default configuration, run this command in the `Benchmarks` subdirectory of the SwiftPM
repository clone (the directory in which this `README.md` file is contained):
```
swift package benchmark
```
To collect all benchmark metrics, set `SWIFTPM_BENCHMARK_ALL_METRICS` to a truthy value:
```
SWIFTPM_BENCHMARK_ALL_METRICS=true swift package benchmark
```
## Benchmark Thresholds
`Benchmarks/Thresholds` subdirectory contains recorded allocation and syscall counts for macOS on Apple Silicon when
built with Swift 5.10. To record new thresholds, run the following command:
```
swift package --allow-writing-to-package-directory benchmark \
--format metricP90AbsoluteThresholds \
--path "Thresholds/$([[ $(uname) == Darwin ]] && echo macos || echo linux)-$(uname -m)"
```
To verify that recorded thresholds do not exceeded given relative or absolute values (passed as `thresholds` arguments
to each benchmark's configuration), run this command:
```
swift package benchmark baseline check --check-absolute-path Thresholds/
```
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