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|
#![allow(clippy::redundant_closure_call)]
extern crate swc_malloc;
#[macro_use]
extern crate criterion;
use std::{hash::Hash, mem::forget};
use compact_str::CompactString;
use criterion::{black_box, BatchSize, BenchmarkId, Criterion};
use par_iter::prelude::*;
use rand::distributions::{Alphanumeric, DistString};
use rustc_hash::FxHashSet;
use smartstring::{LazyCompact, SmartString};
macro_rules! string_creation {
($group:expr, $len:expr, $setup:expr) => {{
let group = &mut $group;
for len in $len {
group.bench_with_input(BenchmarkId::new("hstr", len), &len, |b, _| {
let mut store = hstr::AtomStore::default();
b.iter_batched(
$setup(len),
|text| {
black_box(store.atom(text));
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("hstr_slow", len), &len, |b, _| {
b.iter_batched(
$setup(len),
|text| {
black_box(hstr::Atom::from(text));
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("string_cache", len), &len, |b, _| {
let mut prevent_drop = vec![];
b.iter_batched(
$setup(len),
|text| {
let atom = black_box(string_cache::DefaultAtom::from(text));
prevent_drop.push(atom);
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("compact_str", len), &len, |b, _| {
b.iter_batched(
$setup(len),
|text| {
black_box(CompactString::from(text));
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("smartstring", len), &len, |b, _| {
b.iter_batched(
$setup(len),
|text| {
black_box(SmartString::<LazyCompact>::from(text));
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("smol_str", len), &len, |b, _| {
b.iter_batched(
$setup(len),
|text| {
black_box(smol_str::SmolStr::new(text));
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("kstring", len), &len, |b, _| {
b.iter_batched(
$setup(len),
|text| {
black_box(kstring::KString::from(text));
},
BatchSize::SmallInput,
);
});
}
}};
}
fn bench_basic_creation(c: &mut Criterion) {
let length = [4usize, 8, 16, 32, 64, 128, 256, 512, 1024, 2048];
{
let mut group = c.benchmark_group("single-thread/create/cached");
string_creation!(group, length, |len| {
let text = random_string(len);
move || text.clone()
});
group.finish();
}
{
let mut group = c.benchmark_group("single-thread/create/not-cached");
string_creation!(group, length, |len| { move || random_string(len) });
group.finish();
}
{
let mut group = c.benchmark_group("single-thread/create/mixed");
string_creation!(group, length, |len| {
let text = random_string(len);
let mut i = 0;
move || {
i += 1;
if black_box(i) % 5 == 0 {
text.clone()
} else {
random_string(len)
}
}
});
group.finish();
}
}
fn bench_hash_operation(c: &mut Criterion) {
fn random_hashset<S>(items: Vec<S>) -> FxHashSet<S>
where
S: Eq + Hash,
{
let mut set = FxHashSet::default();
set.extend(items);
set
}
fn random_keys<S>(len: usize, convert: &mut dyn FnMut(String) -> S) -> Vec<S> {
(0..len).map(|_| random_string(1024)).map(convert).collect()
}
fn prepare<S>(len: usize, convert: &mut dyn FnMut(String) -> S) -> (FxHashSet<S>, Vec<S>)
where
S: Eq + Hash + Clone,
{
let items = random_keys(len, convert);
let set = random_hashset(items.clone());
let mut keys = random_keys(9 * len, &mut *convert);
keys.extend(items);
(set, keys)
}
let mut group = c.benchmark_group("single-thread/HashSet");
let length = [1000, 10000];
{
for len in length {
group.bench_with_input(BenchmarkId::new("hstr", len), &len, |b, _| {
let mut for_fairness = vec![];
let mut store = hstr::AtomStore::default();
b.iter_batched(
|| prepare(len, &mut |s| store.atom(s)),
|(map, keys)| {
for key in &keys {
black_box(map.contains(key));
}
for_fairness.extend(map);
for_fairness.extend(keys);
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("string_cache", len), &len, |b, _| {
let mut for_fairness = vec![];
b.iter_batched(
|| prepare(len, &mut string_cache::DefaultAtom::from),
|(map, keys)| {
for key in &keys {
black_box(map.contains(key));
}
for_fairness.extend(map);
for_fairness.extend(keys);
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("compact_str", len), &len, |b, _| {
b.iter_batched(
|| prepare(len, &mut CompactString::from),
|(map, keys)| {
for key in keys {
black_box(map.contains(&key));
}
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("smartstring", len), &len, |b, _| {
b.iter_batched(
|| prepare(len, &mut SmartString::<LazyCompact>::from),
|(map, keys)| {
for key in keys {
black_box(map.contains(&key));
}
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("smol_str", len), &len, |b, _| {
b.iter_batched(
|| prepare(len, &mut smol_str::SmolStr::from),
|(map, keys)| {
for key in keys {
black_box(map.contains(&key));
}
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("kstring", len), &len, |b, _| {
b.iter_batched(
|| prepare(len, &mut kstring::KString::from),
|(map, keys)| {
for key in keys {
black_box(map.contains(&key));
}
},
BatchSize::SmallInput,
);
});
}
};
group.finish();
}
fn bench_parallel_creation(c: &mut Criterion) {
{
let mut group = c.benchmark_group("parallel/create");
for len in [64, 256, 1024] {
group.bench_with_input(BenchmarkId::new("hstr", len), &len, |b, _| {
b.iter_batched(
|| {
(0..num_cpus::get())
.map(|_| hstr::AtomStore::default())
.collect::<Vec<_>>()
},
|stores| {
stores
.into_par_iter()
.map(|mut store| {
let atoms = (0..len)
.map(|_| store.atom(random_string(65)))
.collect::<Vec<_>>();
(store, atoms)
})
.collect::<Vec<_>>()
.into_iter()
.for_each(|(store, atoms)| {
black_box(atoms);
forget(store);
});
},
BatchSize::SmallInput,
);
});
group.bench_with_input(BenchmarkId::new("string_cache", len), &len, |b, _| {
b.iter_batched(
|| {},
|_| {
let mut main_store = FxHashSet::default();
(0..num_cpus::get())
.into_par_iter()
.map(|_| {
(0..len)
.map(|_| {
black_box(string_cache::DefaultAtom::from(random_string(
65,
)))
})
.collect::<Vec<_>>()
})
.collect::<Vec<_>>()
.into_iter()
.for_each(|v| {
main_store.extend(black_box(v));
});
},
BatchSize::SmallInput,
);
});
}
group.finish();
}
}
criterion_group!(
benches,
bench_basic_creation,
bench_parallel_creation,
bench_hash_operation
);
criterion_main!(benches);
fn random_string(len: usize) -> String {
Alphanumeric.sample_string(&mut rand::thread_rng(), len)
}
|
