pyo3/benches/bench_gil.rs

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use criterion::{criterion_group, criterion_main, BatchSize, Bencher, Criterion};
use pyo3::{prelude::*, GILPool};
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fn bench_clean_gilpool_new(b: &mut Bencher<'_>) {
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Python::with_gil(|_py| {
b.iter(|| {
let _ = unsafe { GILPool::new() };
});
});
}
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fn bench_clean_acquire_gil(b: &mut Bencher<'_>) {
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// Acquiring first GIL will also create a "clean" GILPool, so this measures the Python overhead.
b.iter(|| {
let _ = Python::acquire_gil();
});
}
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fn bench_dirty_acquire_gil(b: &mut Bencher<'_>) {
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let obj = Python::with_gil(|py| py.None());
b.iter_batched(
|| {
// Clone and drop an object so that the GILPool has work to do.
let _ = obj.clone();
},
|_| {
let _ = Python::acquire_gil();
},
BatchSize::NumBatches(1),
);
}
fn criterion_benchmark(c: &mut Criterion) {
c.bench_function("clean_gilpool_new", bench_clean_gilpool_new);
c.bench_function("clean_acquire_gil", bench_clean_acquire_gil);
c.bench_function("dirty_acquire_gil", bench_dirty_acquire_gil);
}
criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);