mirror of https://github.com/astral-sh/uv
76418f5bdf
Pubgrub stores incompatibilities as (package name, version range) tuples, meaning it needs to clone the package name for each incompatibility, and each non-borrowed operation on incompatibilities. https://github.com/astral-sh/uv/pull/3673 made me realize that `PubGrubPackage` has gotten large (expensive to copy), so like `Version` and other structs, i've added an `Arc` wrapper around it. It's a pity clippy forbids `.deref()`, it's less opaque than `&**` and has IDE support (clicking on `.deref()` jumps to the right impl). ## Benchmarks It looks like this matters most for complex resolutions which, i assume because they carry larger `PubGrubPackageInner::Package` and `PubGrubPackageInner::Extra` types. ```bash hyperfine --warmup 5 "./uv-main pip compile -q ./scripts/requirements/jupyter.in" "./uv-branch pip compile -q ./scripts/requirements/jupyter.in" hyperfine --warmup 5 "./uv-main pip compile -q ./scripts/requirements/airflow.in" "./uv-branch pip compile -q ./scripts/requirements/airflow.in" hyperfine --warmup 5 "./uv-main pip compile -q ./scripts/requirements/boto3.in" "./uv-branch pip compile -q ./scripts/requirements/boto3.in" ``` ``` Benchmark 1: ./uv-main pip compile -q ./scripts/requirements/jupyter.in Time (mean ± σ): 18.2 ms ± 1.6 ms [User: 14.4 ms, System: 26.0 ms] Range (min … max): 15.8 ms … 22.5 ms 181 runs Benchmark 2: ./uv-branch pip compile -q ./scripts/requirements/jupyter.in Time (mean ± σ): 17.8 ms ± 1.4 ms [User: 14.4 ms, System: 25.3 ms] Range (min … max): 15.4 ms … 23.1 ms 159 runs Summary ./uv-branch pip compile -q ./scripts/requirements/jupyter.in ran 1.02 ± 0.12 times faster than ./uv-main pip compile -q ./scripts/requirements/jupyter.in ``` ``` Benchmark 1: ./uv-main pip compile -q ./scripts/requirements/airflow.in Time (mean ± σ): 153.7 ms ± 3.5 ms [User: 165.2 ms, System: 157.6 ms] Range (min … max): 150.4 ms … 163.0 ms 19 runs Benchmark 2: ./uv-branch pip compile -q ./scripts/requirements/airflow.in Time (mean ± σ): 123.9 ms ± 4.6 ms [User: 152.4 ms, System: 133.8 ms] Range (min … max): 118.4 ms … 138.1 ms 24 runs Summary ./uv-branch pip compile -q ./scripts/requirements/airflow.in ran 1.24 ± 0.05 times faster than ./uv-main pip compile -q ./scripts/requirements/airflow.in ``` ``` Benchmark 1: ./uv-main pip compile -q ./scripts/requirements/boto3.in Time (mean ± σ): 327.0 ms ± 3.8 ms [User: 344.5 ms, System: 71.6 ms] Range (min … max): 322.7 ms … 334.6 ms 10 runs Benchmark 2: ./uv-branch pip compile -q ./scripts/requirements/boto3.in Time (mean ± σ): 311.2 ms ± 3.1 ms [User: 339.3 ms, System: 63.1 ms] Range (min … max): 307.8 ms … 317.0 ms 10 runs Summary ./uv-branch pip compile -q ./scripts/requirements/boto3.in ran 1.05 ± 0.02 times faster than ./uv-main pip compile -q ./scripts/requirements/boto3.in ``` <!-- Thank you for contributing to uv! To help us out with reviewing, please consider the following: - Does this pull request include a summary of the change? (See below.) - Does this pull request include a descriptive title? - Does this pull request include references to any relevant issues? --> |
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