Criterion: the standard Rust benchmarking library
WHAT IT TESTS: ecosystem awareness and rigor about measurement. OUTLINE: Criterion runs on stable Rust, collects many samples, applies statistical analysis with confidence intervals, and compares against saved baselines to detect regressions.
WHAT IT TESTS: whether you know the practical benchmarking tooling and understand statistical rigor. ANSWER OUTLINE: Criterion.rs is the de-facto standard, working on stable Rust unlike the nightly-only test::Bencher. It runs the code many times, gathers a distribution of samples, and reports estimates with confidence intervals rather than a single number. It saves results as baselines and automatically compares new runs against them, flagging statistically significant improvements or regressions, and can emit plots.
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- #rust
- #benchmarking
- #criterion
- #performance
- #testing
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