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Make small tweaks to the profiling documentation (#5335)

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Micha Reiser 2023-06-23 18:11:41 +02:00 committed by GitHub
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CONTRIBUTING.md
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@ -327,22 +327,18 @@ git clone --branch 3.10 https://github.com/python/cpython.git crates/ruff/resour
To benchmark the release build:
```shell
cargo build --release && hyperfine --ignore-failure --warmup 10 \
"./target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache" \
"./target/release/ruff ./crates/ruff/resources/test/cpython/"
cargo build --release && hyperfine --warmup 10 \
"./target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache -e" \
"./target/release/ruff ./crates/ruff/resources/test/cpython/ -e"
Benchmark 1: ./target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache
Time (mean ± σ): 293.8 ms ± 3.2 ms [User: 2384.6 ms, System: 90.3 ms]
Range (min … max): 289.9 ms … 301.6 ms 10 runs
Warning: Ignoring non-zero exit code.
Benchmark 2: ./target/release/ruff ./crates/ruff/resources/test/cpython/
Time (mean ± σ): 48.0 ms ± 3.1 ms [User: 65.2 ms, System: 124.7 ms]
Range (min … max): 45.0 ms … 66.7 ms 62 runs
Warning: Ignoring non-zero exit code.
Summary
'./target/release/ruff ./crates/ruff/resources/test/cpython/' ran
6.12 ± 0.41 times faster than './target/release/ruff ./crates/ruff/resources/test/cpython/ --no-cache'
@ -503,7 +499,7 @@ examples.
Install `perf` and build `ruff_benchmark` with the `release-debug` profile and then run it with perf
```shell
cargo bench -p ruff_benchmark --no-run --profile=release-debug && perf record -g -F 9999 cargo bench -p ruff_benchmark --profile=release-debug -- --profile-time=1
cargo bench -p ruff_benchmark --no-run --profile=release-debug && perf record --call-graph dwarf -F 9999 cargo bench -p ruff_benchmark --profile=release-debug -- --profile-time=1
```
You can also use the `ruff_dev` launcher to run `ruff check` multiple times on a repository to