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|
use criterion::{black_box, criterion_group, criterion_main, Criterion};
use tracing::Level;
struct FakeEmptySpan {
inner: Option<(usize, std::sync::Arc<()>)>,
meta: Option<&'static ()>,
}
impl FakeEmptySpan {
fn new() -> Self {
Self {
inner: None,
meta: None,
}
}
}
impl Drop for FakeEmptySpan {
fn drop(&mut self) {
black_box(&self.inner);
black_box(&self.meta);
}
}
fn bench_no_subscriber(c: &mut Criterion) {
use std::sync::atomic::{AtomicUsize, Ordering};
let mut group = c.benchmark_group("no_subscriber");
group.bench_function("span", |b| {
b.iter(|| {
let span = tracing::span!(Level::TRACE, "span");
black_box(&span);
})
});
group.bench_function("span_enter", |b| {
b.iter(|| {
let span = tracing::span!(Level::TRACE, "span");
let _e = span.enter();
})
});
group.bench_function("empty_span", |b| {
b.iter(|| {
let span = tracing::span::Span::none();
black_box(&span);
});
});
group.bench_function("empty_struct", |b| {
b.iter(|| {
let span = FakeEmptySpan::new();
black_box(&span);
})
});
group.bench_function("event", |b| {
b.iter(|| {
tracing::event!(Level::TRACE, "hello");
})
});
group.bench_function("relaxed_load", |b| {
let foo = AtomicUsize::new(1);
b.iter(|| black_box(foo.load(Ordering::Relaxed)));
});
group.bench_function("acquire_load", |b| {
let foo = AtomicUsize::new(1);
b.iter(|| black_box(foo.load(Ordering::Acquire)))
});
group.bench_function("log", |b| {
b.iter(|| {
log::log!(log::Level::Info, "log");
})
});
group.finish();
}
fn bench_fields(c: &mut Criterion) {
let mut group = c.benchmark_group("no_subscriber_field");
group.bench_function("span", |b| {
b.iter(|| {
black_box(tracing::span!(
Level::TRACE,
"span",
foo = tracing::field::display(format!("bar {:?}", 2))
));
})
});
group.bench_function("event", |b| {
b.iter(|| {
tracing::event!(
Level::TRACE,
foo = tracing::field::display(format!("bar {:?}", 2))
);
})
});
group.bench_function("log", |b| {
b.iter(|| log::log!(log::Level::Trace, "{}", format!("bar {:?}", 2)))
});
group.finish();
}
criterion_group!(benches, bench_no_subscriber, bench_fields);
criterion_main!(benches);
|
