switch to using criterion for benchmarks

It has a ton of great features[1], including stronger statistical signifance
tests, making comparisons to previous or baseline runs, nice plots, and being
able to be run on stable.

1: https://bheisler.github.io/criterion.rs/book/
This commit is contained in:
Brandon W Maister 2019-11-23 18:21:16 -05:00
parent 59059352c1
commit 8de2cc375f
3 changed files with 73 additions and 0 deletions

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@ -8,6 +8,12 @@ Chrono obeys the principle of [Semantic Versioning](http://semver.org/).
There were/are numerous minor versions before 1.0 due to the language changes.
Versions with only mechanical changes will be omitted from the following list.
## next
### Internal improvements
* Use Criterion for benchmarks (@quodlibetor)
## 0.4.10
### Improvements

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@ -48,6 +48,7 @@ serde_derive = { version = "1", default-features = false }
bincode = { version = "0.8.0" }
num-iter = { version = "0.1.35", default-features = false }
doc-comment = "0.3"
criterion = "0.3"
[target.'cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))'.dev-dependencies]
wasm-bindgen-test = "0.2"
@ -57,3 +58,7 @@ all-features = true
[package.metadata.playground]
all-features = true
[[bench]]
name = "parsing"
harness = false

62
benches/parsing.rs Normal file
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@ -0,0 +1,62 @@
extern crate chrono;
extern crate criterion;
use criterion::{black_box, criterion_group, criterion_main, Criterion};
use chrono::prelude::*;
use chrono::{Utc, FixedOffset, DateTime};
fn bench_datetime_parse_from_rfc2822(c: &mut Criterion) {
c.bench_function("bench_datetime_parse_from_rfc2822", |b| {
b.iter(|| {
let str = black_box("Wed, 18 Feb 2015 23:16:09 +0000");
DateTime::parse_from_rfc2822(str).unwrap()
})
});
}
fn bench_datetime_parse_from_rfc3339(c: &mut Criterion) {
c.bench_function("bench_datetime_parse_from_rfc3339", |b| {
b.iter(|| {
let str = black_box("2015-02-18T23:59:60.234567+05:00");
DateTime::parse_from_rfc3339(str).unwrap()
})
});
}
fn bench_datetime_from_str(c: &mut Criterion) {
c.bench_function("bench_datetime_from_str", |b| {
b.iter(|| {
use std::str::FromStr;
let str = black_box("2019-03-30T18:46:57.193Z");
DateTime::<Utc>::from_str(str).unwrap()
})
});
}
fn bench_datetime_to_rfc2822(c: &mut Criterion) {
let pst = FixedOffset::east(8 * 60 * 60);
let dt = pst.ymd(2018, 1, 11).and_hms_nano(10, 5, 13, 084_660_000);
c.bench_function("bench_datetime_to_rfc2822", |b| {
b.iter(|| black_box(dt).to_rfc2822())
});
}
fn bench_datetime_to_rfc3339(c: &mut Criterion) {
let pst = FixedOffset::east(8 * 60 * 60);
let dt = pst.ymd(2018, 1, 11).and_hms_nano(10, 5, 13, 084_660_000);
c.bench_function("bench_datetime_to_rfc3339", |b| {
b.iter(|| black_box(dt).to_rfc3339())
});
}
criterion_group!(
benches,
bench_datetime_parse_from_rfc2822,
bench_datetime_parse_from_rfc3339,
bench_datetime_from_str,
bench_datetime_to_rfc2822,
bench_datetime_to_rfc3339
);
criterion_main!(benches);