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-rw-r--r--third_party/rust/tracing/benches/baseline.rs24
-rw-r--r--third_party/rust/tracing/benches/dispatch_get_clone.rs15
-rw-r--r--third_party/rust/tracing/benches/dispatch_get_ref.rs16
-rw-r--r--third_party/rust/tracing/benches/empty_span.rs43
-rw-r--r--third_party/rust/tracing/benches/enter_span.rs16
-rw-r--r--third_party/rust/tracing/benches/event.rs12
-rw-r--r--third_party/rust/tracing/benches/shared.rs160
-rw-r--r--third_party/rust/tracing/benches/span_fields.rs23
-rw-r--r--third_party/rust/tracing/benches/span_no_fields.rs13
-rw-r--r--third_party/rust/tracing/benches/span_repeated.rs20
10 files changed, 342 insertions, 0 deletions
diff --git a/third_party/rust/tracing/benches/baseline.rs b/third_party/rust/tracing/benches/baseline.rs
new file mode 100644
index 0000000000..93c14f422c
--- /dev/null
+++ b/third_party/rust/tracing/benches/baseline.rs
@@ -0,0 +1,24 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+fn bench(c: &mut Criterion) {
+ use std::sync::atomic::{AtomicUsize, Ordering};
+
+ let mut group = c.benchmark_group("comparison");
+ 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();
+}
+
+criterion_group!(benches, bench);
+criterion_main!(benches);
diff --git a/third_party/rust/tracing/benches/dispatch_get_clone.rs b/third_party/rust/tracing/benches/dispatch_get_clone.rs
new file mode 100644
index 0000000000..15577c6969
--- /dev/null
+++ b/third_party/rust/tracing/benches/dispatch_get_clone.rs
@@ -0,0 +1,15 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+mod shared;
+
+fn bench(c: &mut Criterion) {
+ shared::for_all_dispatches(&mut c.benchmark_group("Dispatch::get_clone"), |b| {
+ b.iter(|| {
+ let current = tracing::dispatcher::get_default(|current| current.clone());
+ black_box(current);
+ })
+ });
+}
+
+criterion_group!(benches, bench);
+criterion_main!(benches);
diff --git a/third_party/rust/tracing/benches/dispatch_get_ref.rs b/third_party/rust/tracing/benches/dispatch_get_ref.rs
new file mode 100644
index 0000000000..a59c343795
--- /dev/null
+++ b/third_party/rust/tracing/benches/dispatch_get_ref.rs
@@ -0,0 +1,16 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+mod shared;
+
+fn bench(c: &mut Criterion) {
+ shared::for_all_dispatches(&mut c.benchmark_group("Dispatch::get_ref"), |b| {
+ b.iter(|| {
+ tracing::dispatcher::get_default(|current| {
+ black_box(&current);
+ })
+ })
+ });
+}
+
+criterion_group!(benches, bench);
+criterion_main!(benches);
diff --git a/third_party/rust/tracing/benches/empty_span.rs b/third_party/rust/tracing/benches/empty_span.rs
new file mode 100644
index 0000000000..fb38b08e15
--- /dev/null
+++ b/third_party/rust/tracing/benches/empty_span.rs
@@ -0,0 +1,43 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+mod shared;
+
+fn bench(c: &mut Criterion) {
+ let mut group = c.benchmark_group("empty_span");
+ shared::for_all_dispatches(&mut group, |b| {
+ b.iter(|| {
+ let span = tracing::span::Span::none();
+ black_box(&span);
+ })
+ });
+ group.bench_function("baseline_struct", |b| {
+ b.iter(|| {
+ let span = FakeEmptySpan::new();
+ black_box(&span);
+ })
+ });
+}
+
+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);
+ }
+}
+
+criterion_group!(benches, bench);
+criterion_main!(benches);
diff --git a/third_party/rust/tracing/benches/enter_span.rs b/third_party/rust/tracing/benches/enter_span.rs
new file mode 100644
index 0000000000..757350a539
--- /dev/null
+++ b/third_party/rust/tracing/benches/enter_span.rs
@@ -0,0 +1,16 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+use tracing::{span, Level};
+
+mod shared;
+
+fn bench(c: &mut Criterion) {
+ shared::for_all_dispatches(&mut c.benchmark_group("enter_span"), |b| {
+ let span = span!(Level::TRACE, "span");
+ b.iter(|| {
+ let _span = span.enter();
+ })
+ });
+}
+
+criterion_group!(benches, bench);
+criterion_main!(benches);
diff --git a/third_party/rust/tracing/benches/event.rs b/third_party/rust/tracing/benches/event.rs
new file mode 100644
index 0000000000..1649325482
--- /dev/null
+++ b/third_party/rust/tracing/benches/event.rs
@@ -0,0 +1,12 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+
+mod shared;
+
+fn bench(c: &mut Criterion) {
+ shared::for_all_recording(&mut c.benchmark_group("event"), |b| {
+ b.iter(|| tracing::info!("hello world!"))
+ });
+}
+
+criterion_group!(benches, bench);
+criterion_main!(benches);
diff --git a/third_party/rust/tracing/benches/shared.rs b/third_party/rust/tracing/benches/shared.rs
new file mode 100644
index 0000000000..56508c4ab7
--- /dev/null
+++ b/third_party/rust/tracing/benches/shared.rs
@@ -0,0 +1,160 @@
+#![allow(dead_code)]
+use criterion::{black_box, measurement::WallTime, Bencher};
+use tracing::{field, span, Event, Id, Metadata};
+
+use std::{
+ fmt::{self, Write},
+ sync::{Mutex, MutexGuard},
+};
+
+pub fn for_all_recording(
+ group: &mut criterion::BenchmarkGroup<'_, WallTime>,
+ mut iter: impl FnMut(&mut Bencher<'_, WallTime>),
+) {
+ // first, run benchmarks with no subscriber
+ group.bench_function("none", &mut iter);
+
+ // then, run benchmarks with a scoped default subscriber
+ tracing::subscriber::with_default(EnabledSubscriber, || {
+ group.bench_function("scoped", &mut iter)
+ });
+
+ let subscriber = VisitingSubscriber(Mutex::new(String::from("")));
+ tracing::subscriber::with_default(subscriber, || {
+ group.bench_function("scoped_recording", &mut iter);
+ });
+
+ // finally, set a global default subscriber, and run the benchmarks again.
+ tracing::subscriber::set_global_default(EnabledSubscriber)
+ .expect("global default should not have already been set!");
+ let _ = log::set_logger(&NOP_LOGGER);
+ log::set_max_level(log::LevelFilter::Trace);
+ group.bench_function("global", &mut iter);
+}
+
+pub fn for_all_dispatches(
+ group: &mut criterion::BenchmarkGroup<'_, WallTime>,
+ mut iter: impl FnMut(&mut Bencher<'_, WallTime>),
+) {
+ // first, run benchmarks with no subscriber
+ group.bench_function("none", &mut iter);
+
+ // then, run benchmarks with a scoped default subscriber
+ tracing::subscriber::with_default(EnabledSubscriber, || {
+ group.bench_function("scoped", &mut iter)
+ });
+
+ // finally, set a global default subscriber, and run the benchmarks again.
+ tracing::subscriber::set_global_default(EnabledSubscriber)
+ .expect("global default should not have already been set!");
+ let _ = log::set_logger(&NOP_LOGGER);
+ log::set_max_level(log::LevelFilter::Trace);
+ group.bench_function("global", &mut iter);
+}
+
+const NOP_LOGGER: NopLogger = NopLogger;
+
+struct NopLogger;
+
+impl log::Log for NopLogger {
+ fn enabled(&self, _metadata: &log::Metadata) -> bool {
+ true
+ }
+
+ fn log(&self, record: &log::Record) {
+ if self.enabled(record.metadata()) {
+ let mut this = self;
+ let _ = write!(this, "{}", record.args());
+ }
+ }
+
+ fn flush(&self) {}
+}
+
+impl Write for &NopLogger {
+ fn write_str(&mut self, s: &str) -> std::fmt::Result {
+ black_box(s);
+ Ok(())
+ }
+}
+
+/// Simulates a subscriber that records span data.
+struct VisitingSubscriber(Mutex<String>);
+
+struct Visitor<'a>(MutexGuard<'a, String>);
+
+impl<'a> field::Visit for Visitor<'a> {
+ fn record_debug(&mut self, _field: &field::Field, value: &dyn fmt::Debug) {
+ let _ = write!(&mut *self.0, "{:?}", value);
+ }
+}
+
+impl tracing::Subscriber for VisitingSubscriber {
+ fn new_span(&self, span: &span::Attributes<'_>) -> Id {
+ let mut visitor = Visitor(self.0.lock().unwrap());
+ span.record(&mut visitor);
+ Id::from_u64(0xDEAD_FACE)
+ }
+
+ fn record(&self, _span: &Id, values: &span::Record<'_>) {
+ let mut visitor = Visitor(self.0.lock().unwrap());
+ values.record(&mut visitor);
+ }
+
+ fn event(&self, event: &Event<'_>) {
+ let mut visitor = Visitor(self.0.lock().unwrap());
+ event.record(&mut visitor);
+ }
+
+ fn record_follows_from(&self, span: &Id, follows: &Id) {
+ let _ = (span, follows);
+ }
+
+ fn enabled(&self, metadata: &Metadata<'_>) -> bool {
+ let _ = metadata;
+ true
+ }
+
+ fn enter(&self, span: &Id) {
+ let _ = span;
+ }
+
+ fn exit(&self, span: &Id) {
+ let _ = span;
+ }
+}
+
+/// A subscriber that is enabled but otherwise does nothing.
+struct EnabledSubscriber;
+
+impl tracing::Subscriber for EnabledSubscriber {
+ fn new_span(&self, span: &span::Attributes<'_>) -> Id {
+ let _ = span;
+ Id::from_u64(0xDEAD_FACE)
+ }
+
+ fn event(&self, event: &Event<'_>) {
+ let _ = event;
+ }
+
+ fn record(&self, span: &Id, values: &span::Record<'_>) {
+ let _ = (span, values);
+ }
+
+ fn record_follows_from(&self, span: &Id, follows: &Id) {
+ let _ = (span, follows);
+ }
+
+ fn enabled(&self, metadata: &Metadata<'_>) -> bool {
+ let _ = metadata;
+ true
+ }
+
+ fn enter(&self, span: &Id) {
+ let _ = span;
+ }
+
+ fn exit(&self, span: &Id) {
+ let _ = span;
+ }
+}
diff --git a/third_party/rust/tracing/benches/span_fields.rs b/third_party/rust/tracing/benches/span_fields.rs
new file mode 100644
index 0000000000..5ad8289826
--- /dev/null
+++ b/third_party/rust/tracing/benches/span_fields.rs
@@ -0,0 +1,23 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+use tracing::{span, Level};
+
+mod shared;
+
+fn bench(c: &mut Criterion) {
+ shared::for_all_recording(&mut c.benchmark_group("span_fields"), |b| {
+ b.iter(|| {
+ let span = span!(
+ Level::TRACE,
+ "span",
+ foo = "foo",
+ bar = "bar",
+ baz = 3,
+ quuux = tracing::field::debug(0.99)
+ );
+ criterion::black_box(span)
+ })
+ });
+}
+
+criterion_group!(benches, bench);
+criterion_main!(benches);
diff --git a/third_party/rust/tracing/benches/span_no_fields.rs b/third_party/rust/tracing/benches/span_no_fields.rs
new file mode 100644
index 0000000000..8a1ff6e041
--- /dev/null
+++ b/third_party/rust/tracing/benches/span_no_fields.rs
@@ -0,0 +1,13 @@
+use criterion::{criterion_group, criterion_main, Criterion};
+use tracing::{span, Level};
+
+mod shared;
+
+fn bench(c: &mut Criterion) {
+ shared::for_all_recording(&mut c.benchmark_group("span_no_fields"), |b| {
+ b.iter(|| span!(Level::TRACE, "span"))
+ });
+}
+
+criterion_group!(benches, bench);
+criterion_main!(benches);
diff --git a/third_party/rust/tracing/benches/span_repeated.rs b/third_party/rust/tracing/benches/span_repeated.rs
new file mode 100644
index 0000000000..4c6ac409d8
--- /dev/null
+++ b/third_party/rust/tracing/benches/span_repeated.rs
@@ -0,0 +1,20 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use tracing::{span, Level};
+
+mod shared;
+
+fn bench(c: &mut Criterion) {
+ shared::for_all_recording(&mut c.benchmark_group("span_repeated"), |b| {
+ let n = black_box(N_SPANS);
+ b.iter(|| (0..n).fold(mk_span(0), |_, i| mk_span(i as u64)))
+ });
+}
+
+#[inline]
+fn mk_span(i: u64) -> tracing::Span {
+ span!(Level::TRACE, "span", i = i)
+}
+
+const N_SPANS: usize = 100;
+criterion_group!(benches, bench);
+criterion_main!(benches);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-12 00:30:55 +0000