Cargo bench
cargo bench is a Cargo command that builds and runs a Rust package's benchmark targets.
Refactoring to Rust
cargo bench is a Cargo command that builds and runs a package's benchmarks.
- How it is used
- Runs package benchmarks and presents measured execution-time estimates.
- How deep it goes
- Explains invocation and Criterion output, while deferring benchmark implementation details to separate source files.
- Examples
- Uses u8 and u128 arithmetic benchmarks and compares pure Python with a Rust extension library.
- What you can do after
- Operate/configure it to run benchmarks and interpret Criterion's timing intervals and sample estimates.
Idiomatic Rust
cargo bench is a Cargo command that compiles benchmarks in release mode and executes them.
- How it is used
- Runs benchmarks rather than tests to compare performance across collection operations.
- How deep it goes
- Shows #[bench] functions using Bencher and sample timings, while leaving the full benchmark suite elsewhere.
- Examples
- Benchmarks appending one million elements and finding or removing values in million-element collections.
- What you can do after
- Evaluate collection performance by running benchmarks and comparing measured timings, while allowing for machine-to-machine variation.
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