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|
#![feature(test)]
extern crate test;
use blake3_guts::BLOCK_LEN;
use rand::prelude::*;
use test::Bencher;
const KIB: usize = 1024;
// This struct randomizes two things:
// 1. The actual bytes of input.
// 2. The page offset the input starts at.
pub struct RandomInput {
buf: Vec<u8>,
len: usize,
offsets: Vec<usize>,
offset_index: usize,
}
impl RandomInput {
pub fn new(b: &mut Bencher, len: usize) -> Self {
b.bytes += len as u64;
let page_size: usize = page_size::get();
let mut buf = vec![0u8; len + page_size];
let mut rng = rand::thread_rng();
rng.fill_bytes(&mut buf);
let mut offsets: Vec<usize> = (0..page_size).collect();
offsets.shuffle(&mut rng);
Self {
buf,
len,
offsets,
offset_index: 0,
}
}
pub fn get(&mut self) -> &[u8] {
let offset = self.offsets[self.offset_index];
self.offset_index += 1;
if self.offset_index >= self.offsets.len() {
self.offset_index = 0;
}
&self.buf[offset..][..self.len]
}
}
fn bench_atonce(b: &mut Bencher, len: usize) {
let mut input = RandomInput::new(b, len);
b.iter(|| blake3::hash(input.get()));
}
#[bench]
fn bench_atonce_0001_block(b: &mut Bencher) {
bench_atonce(b, BLOCK_LEN);
}
#[bench]
fn bench_atonce_0001_kib(b: &mut Bencher) {
bench_atonce(b, 1 * KIB);
}
#[bench]
fn bench_atonce_0002_kib(b: &mut Bencher) {
bench_atonce(b, 2 * KIB);
}
#[bench]
fn bench_atonce_0004_kib(b: &mut Bencher) {
bench_atonce(b, 4 * KIB);
}
#[bench]
fn bench_atonce_0008_kib(b: &mut Bencher) {
bench_atonce(b, 8 * KIB);
}
#[bench]
fn bench_atonce_0016_kib(b: &mut Bencher) {
bench_atonce(b, 16 * KIB);
}
#[bench]
fn bench_atonce_0032_kib(b: &mut Bencher) {
bench_atonce(b, 32 * KIB);
}
#[bench]
fn bench_atonce_0064_kib(b: &mut Bencher) {
bench_atonce(b, 64 * KIB);
}
#[bench]
fn bench_atonce_0128_kib(b: &mut Bencher) {
bench_atonce(b, 128 * KIB);
}
#[bench]
fn bench_atonce_0256_kib(b: &mut Bencher) {
bench_atonce(b, 256 * KIB);
}
#[bench]
fn bench_atonce_0512_kib(b: &mut Bencher) {
bench_atonce(b, 512 * KIB);
}
#[bench]
fn bench_atonce_1024_kib(b: &mut Bencher) {
bench_atonce(b, 1024 * KIB);
}
fn bench_incremental(b: &mut Bencher, len: usize) {
let mut input = RandomInput::new(b, len);
b.iter(|| blake3::Hasher::new().update(input.get()).finalize());
}
#[bench]
fn bench_incremental_0001_block(b: &mut Bencher) {
bench_incremental(b, BLOCK_LEN);
}
#[bench]
fn bench_incremental_0001_kib(b: &mut Bencher) {
bench_incremental(b, 1 * KIB);
}
#[bench]
fn bench_incremental_0002_kib(b: &mut Bencher) {
bench_incremental(b, 2 * KIB);
}
#[bench]
fn bench_incremental_0004_kib(b: &mut Bencher) {
bench_incremental(b, 4 * KIB);
}
#[bench]
fn bench_incremental_0008_kib(b: &mut Bencher) {
bench_incremental(b, 8 * KIB);
}
#[bench]
fn bench_incremental_0016_kib(b: &mut Bencher) {
bench_incremental(b, 16 * KIB);
}
#[bench]
fn bench_incremental_0032_kib(b: &mut Bencher) {
bench_incremental(b, 32 * KIB);
}
#[bench]
fn bench_incremental_0064_kib(b: &mut Bencher) {
bench_incremental(b, 64 * KIB);
}
#[bench]
fn bench_incremental_0128_kib(b: &mut Bencher) {
bench_incremental(b, 128 * KIB);
}
#[bench]
fn bench_incremental_0256_kib(b: &mut Bencher) {
bench_incremental(b, 256 * KIB);
}
#[bench]
fn bench_incremental_0512_kib(b: &mut Bencher) {
bench_incremental(b, 512 * KIB);
}
#[bench]
fn bench_incremental_1024_kib(b: &mut Bencher) {
bench_incremental(b, 1024 * KIB);
}
fn bench_reference(b: &mut Bencher, len: usize) {
let mut input = RandomInput::new(b, len);
b.iter(|| {
let mut hasher = reference_impl::Hasher::new();
hasher.update(input.get());
let mut out = [0; 32];
hasher.finalize(&mut out);
out
});
}
#[bench]
fn bench_reference_0001_block(b: &mut Bencher) {
bench_reference(b, BLOCK_LEN);
}
#[bench]
fn bench_reference_0001_kib(b: &mut Bencher) {
bench_reference(b, 1 * KIB);
}
#[bench]
fn bench_reference_0002_kib(b: &mut Bencher) {
bench_reference(b, 2 * KIB);
}
#[bench]
fn bench_reference_0004_kib(b: &mut Bencher) {
bench_reference(b, 4 * KIB);
}
#[bench]
fn bench_reference_0008_kib(b: &mut Bencher) {
bench_reference(b, 8 * KIB);
}
#[bench]
fn bench_reference_0016_kib(b: &mut Bencher) {
bench_reference(b, 16 * KIB);
}
#[bench]
fn bench_reference_0032_kib(b: &mut Bencher) {
bench_reference(b, 32 * KIB);
}
#[bench]
fn bench_reference_0064_kib(b: &mut Bencher) {
bench_reference(b, 64 * KIB);
}
#[bench]
fn bench_reference_0128_kib(b: &mut Bencher) {
bench_reference(b, 128 * KIB);
}
#[bench]
fn bench_reference_0256_kib(b: &mut Bencher) {
bench_reference(b, 256 * KIB);
}
#[bench]
fn bench_reference_0512_kib(b: &mut Bencher) {
bench_reference(b, 512 * KIB);
}
#[bench]
fn bench_reference_1024_kib(b: &mut Bencher) {
bench_reference(b, 1024 * KIB);
}
#[cfg(feature = "rayon")]
fn bench_rayon(b: &mut Bencher, len: usize) {
let mut input = RandomInput::new(b, len);
b.iter(|| blake3::Hasher::new().update_rayon(input.get()).finalize());
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0001_block(b: &mut Bencher) {
bench_rayon(b, BLOCK_LEN);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0001_kib(b: &mut Bencher) {
bench_rayon(b, 1 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0002_kib(b: &mut Bencher) {
bench_rayon(b, 2 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0004_kib(b: &mut Bencher) {
bench_rayon(b, 4 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0008_kib(b: &mut Bencher) {
bench_rayon(b, 8 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0016_kib(b: &mut Bencher) {
bench_rayon(b, 16 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0032_kib(b: &mut Bencher) {
bench_rayon(b, 32 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0064_kib(b: &mut Bencher) {
bench_rayon(b, 64 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0128_kib(b: &mut Bencher) {
bench_rayon(b, 128 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0256_kib(b: &mut Bencher) {
bench_rayon(b, 256 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_0512_kib(b: &mut Bencher) {
bench_rayon(b, 512 * KIB);
}
#[bench]
#[cfg(feature = "rayon")]
fn bench_rayon_1024_kib(b: &mut Bencher) {
bench_rayon(b, 1024 * KIB);
}
// This checks that update() splits up its input in increasing powers of 2, so
// that it can recover a high degree of parallelism when the number of bytes
// hashed so far is uneven. The performance of this benchmark should be
// reasonably close to bench_incremental_0064_kib, within 80% or so. When we
// had a bug in this logic (https://github.com/BLAKE3-team/BLAKE3/issues/69),
// performance was less than half.
#[bench]
fn bench_two_updates(b: &mut Bencher) {
let len = 65536;
let mut input = RandomInput::new(b, len);
b.iter(|| {
let mut hasher = blake3::Hasher::new();
let input = input.get();
hasher.update(&input[..1]);
hasher.update(&input[1..]);
hasher.finalize()
});
}
|
