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use criterion::measurement::Measurement;
use criterion::{criterion_group, criterion_main, Bencher, BenchmarkId, Criterion};
use rand::distributions::Standard;
use rand::rngs::SmallRng;
use rand::{Rng, SeedableRng};
use phf_generator::generate_hash;
fn gen_vec(len: usize) -> Vec<u64> {
SmallRng::seed_from_u64(0xAAAAAAAAAAAAAAAA)
.sample_iter(Standard)
.take(len)
.collect()
}
fn bench_hash<M: Measurement>(b: &mut Bencher<M>, len: &usize) {
let vec = gen_vec(*len);
b.iter(|| generate_hash(&vec))
}
fn gen_hash_small(c: &mut Criterion) {
let sizes = vec![0, 1, 2, 5, 10, 25, 50, 75];
for size in &sizes {
c.bench_with_input(BenchmarkId::new("gen_hash_small", *size), size, bench_hash);
}
}
fn gen_hash_med(c: &mut Criterion) {
let sizes = vec![100, 250, 500, 1000, 2500, 5000, 7500];
for size in &sizes {
c.bench_with_input(BenchmarkId::new("gen_hash_medium", *size), size, bench_hash);
}
}
fn gen_hash_large(c: &mut Criterion) {
let sizes = vec![10_000, 25_000, 50_000, 75_000];
for size in &sizes {
c.bench_with_input(BenchmarkId::new("gen_hash_large", *size), size, bench_hash);
}
}
fn gen_hash_xlarge(c: &mut Criterion) {
let sizes = vec![100_000, 250_000, 500_000, 750_000, 1_000_000];
for size in &sizes {
c.bench_with_input(BenchmarkId::new("gen_hash_xlarge", *size), size, bench_hash);
}
}
criterion_group!(
benches,
gen_hash_small,
gen_hash_med,
gen_hash_large,
gen_hash_xlarge
);
criterion_main!(benches);