Stable Rustでベンチマークを統計的に評価する - Qiita

#![feature(test)] extern crate test; pub fn add_two(a: i32) -> i32 { a + 2 } #[cfg(test)] mod tests { use super::*; use test::Bencher; #[bench] fn bench_add_two(b: &mut Bencher) { b.iter(|| add_two(2)); } } $ cargo bench Compiling adder v0.0.1 (file:///home/steve/tmp/adder) Running target/release/adder-91b3e234d4ed382a running 2 tests test tests::it_works ... ignored test tests::bench_add_two ...