What are the basics of benchmarking in Rust?

What are the basics of benchmarking in Rust?

Benchmarking in Rust involves measuring the performance of code to identify bottlenecks and optimize efficiency.

How do I set up a benchmark in my Rust project?

You can use the criterion crate for benchmarking. First, add it to your Cargo.toml, then create a benchmark file.

Can you show me a simple example of a benchmark?

Sure! Here's a basic example:

use criterion::{black_box, criterion_group, criterion_main, Criterion};

fn bench_example(c: &mut Criterion) {
    c.bench_function("my_function", |b| b.iter(|| my_function(black_box(42))));
}

criterion_group!(benches, bench_example);
criterion_main!(benches);

What should I look for in the benchmark results?

Look for execution time, memory usage, and any significant variations in performance across different runs.