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-rw-r--r--rand/benches/generators.rs197
1 files changed, 132 insertions, 65 deletions
diff --git a/rand/benches/generators.rs b/rand/benches/generators.rs
index daee7c5..a12b5a6 100644
--- a/rand/benches/generators.rs
+++ b/rand/benches/generators.rs
@@ -1,7 +1,20 @@
+// Copyright 2018 Developers of the Rand project.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
#![feature(test)]
extern crate test;
extern crate rand;
+extern crate rand_isaac;
+extern crate rand_chacha;
+extern crate rand_hc;
+extern crate rand_pcg;
+extern crate rand_xorshift;
const RAND_BENCH_N: u64 = 1000;
const BYTES_LEN: usize = 1024;
@@ -9,31 +22,20 @@ const BYTES_LEN: usize = 1024;
use std::mem::size_of;
use test::{black_box, Bencher};
-use rand::{Rng, StdRng, OsRng, JitterRng};
-use rand::{XorShiftRng, IsaacRng, Isaac64Rng, ChaChaRng};
+use rand::prelude::*;
+use rand::rngs::adapter::ReseedingRng;
+use rand::rngs::{OsRng, JitterRng, EntropyRng};
+use rand_isaac::{IsaacRng, Isaac64Rng};
+use rand_chacha::ChaChaRng;
+use rand_hc::{Hc128Rng, Hc128Core};
+use rand_pcg::{Lcg64Xsh32, Mcg128Xsl64};
+use rand_xorshift::XorShiftRng;
macro_rules! gen_bytes {
- ($fnn:ident, $gen:ident) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng: $gen = OsRng::new().unwrap().gen();
- let mut buf = [0u8; BYTES_LEN];
- b.iter(|| {
- for _ in 0..RAND_BENCH_N {
- rng.fill_bytes(&mut buf);
- black_box(buf);
- }
- });
- b.bytes = BYTES_LEN as u64 * RAND_BENCH_N;
- }
- }
-}
-
-macro_rules! gen_bytes_new {
- ($fnn:ident, $gen:ident) => {
+ ($fnn:ident, $gen:expr) => {
#[bench]
fn $fnn(b: &mut Bencher) {
- let mut rng = $gen::new().unwrap();
+ let mut rng = $gen;
let mut buf = [0u8; BYTES_LEN];
b.iter(|| {
for _ in 0..RAND_BENCH_N {
@@ -46,63 +48,63 @@ macro_rules! gen_bytes_new {
}
}
-gen_bytes!(gen_bytes_xorshift, XorShiftRng);
-gen_bytes!(gen_bytes_isaac, IsaacRng);
-gen_bytes!(gen_bytes_isaac64, Isaac64Rng);
-gen_bytes!(gen_bytes_chacha, ChaChaRng);
-gen_bytes_new!(gen_bytes_std, StdRng);
-gen_bytes_new!(gen_bytes_os, OsRng);
-
+gen_bytes!(gen_bytes_xorshift, XorShiftRng::from_entropy());
+gen_bytes!(gen_bytes_lcg64_xsh32, Lcg64Xsh32::from_entropy());
+gen_bytes!(gen_bytes_mcg128_xsh64, Mcg128Xsl64::from_entropy());
+gen_bytes!(gen_bytes_chacha20, ChaChaRng::from_entropy());
+gen_bytes!(gen_bytes_hc128, Hc128Rng::from_entropy());
+gen_bytes!(gen_bytes_isaac, IsaacRng::from_entropy());
+gen_bytes!(gen_bytes_isaac64, Isaac64Rng::from_entropy());
+gen_bytes!(gen_bytes_std, StdRng::from_entropy());
+gen_bytes!(gen_bytes_small, SmallRng::from_entropy());
+gen_bytes!(gen_bytes_os, OsRng::new().unwrap());
macro_rules! gen_uint {
- ($fnn:ident, $ty:ty, $gen:ident) => {
- #[bench]
- fn $fnn(b: &mut Bencher) {
- let mut rng: $gen = OsRng::new().unwrap().gen();
- b.iter(|| {
- for _ in 0..RAND_BENCH_N {
- black_box(rng.gen::<$ty>());
- }
- });
- b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N;
- }
- }
-}
-
-macro_rules! gen_uint_new {
- ($fnn:ident, $ty:ty, $gen:ident) => {
+ ($fnn:ident, $ty:ty, $gen:expr) => {
#[bench]
fn $fnn(b: &mut Bencher) {
- let mut rng = $gen::new().unwrap();
+ let mut rng = $gen;
b.iter(|| {
+ let mut accum: $ty = 0;
for _ in 0..RAND_BENCH_N {
- black_box(rng.gen::<$ty>());
+ accum = accum.wrapping_add(rng.gen::<$ty>());
}
+ accum
});
b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N;
}
}
}
-gen_uint!(gen_u32_xorshift, u32, XorShiftRng);
-gen_uint!(gen_u32_isaac, u32, IsaacRng);
-gen_uint!(gen_u32_isaac64, u32, Isaac64Rng);
-gen_uint!(gen_u32_chacha, u32, ChaChaRng);
-gen_uint_new!(gen_u32_std, u32, StdRng);
-gen_uint_new!(gen_u32_os, u32, OsRng);
-
-gen_uint!(gen_u64_xorshift, u64, XorShiftRng);
-gen_uint!(gen_u64_isaac, u64, IsaacRng);
-gen_uint!(gen_u64_isaac64, u64, Isaac64Rng);
-gen_uint!(gen_u64_chacha, u64, ChaChaRng);
-gen_uint_new!(gen_u64_std, u64, StdRng);
-gen_uint_new!(gen_u64_os, u64, OsRng);
-
+gen_uint!(gen_u32_xorshift, u32, XorShiftRng::from_entropy());
+gen_uint!(gen_u32_lcg64_xsh32, u32, Lcg64Xsh32::from_entropy());
+gen_uint!(gen_u32_mcg128_xsh64, u32, Mcg128Xsl64::from_entropy());
+gen_uint!(gen_u32_chacha20, u32, ChaChaRng::from_entropy());
+gen_uint!(gen_u32_hc128, u32, Hc128Rng::from_entropy());
+gen_uint!(gen_u32_isaac, u32, IsaacRng::from_entropy());
+gen_uint!(gen_u32_isaac64, u32, Isaac64Rng::from_entropy());
+gen_uint!(gen_u32_std, u32, StdRng::from_entropy());
+gen_uint!(gen_u32_small, u32, SmallRng::from_entropy());
+gen_uint!(gen_u32_os, u32, OsRng::new().unwrap());
+
+gen_uint!(gen_u64_xorshift, u64, XorShiftRng::from_entropy());
+gen_uint!(gen_u64_lcg64_xsh32, u64, Lcg64Xsh32::from_entropy());
+gen_uint!(gen_u64_mcg128_xsh64, u64, Mcg128Xsl64::from_entropy());
+gen_uint!(gen_u64_chacha20, u64, ChaChaRng::from_entropy());
+gen_uint!(gen_u64_hc128, u64, Hc128Rng::from_entropy());
+gen_uint!(gen_u64_isaac, u64, IsaacRng::from_entropy());
+gen_uint!(gen_u64_isaac64, u64, Isaac64Rng::from_entropy());
+gen_uint!(gen_u64_std, u64, StdRng::from_entropy());
+gen_uint!(gen_u64_small, u64, SmallRng::from_entropy());
+gen_uint!(gen_u64_os, u64, OsRng::new().unwrap());
+
+// Do not test JitterRng like the others by running it RAND_BENCH_N times per,
+// measurement, because it is way too slow. Only run it once.
#[bench]
fn gen_u64_jitter(b: &mut Bencher) {
let mut rng = JitterRng::new().unwrap();
b.iter(|| {
- black_box(rng.gen::<u64>());
+ rng.gen::<u64>()
});
b.bytes = size_of::<u64>() as u64;
}
@@ -111,16 +113,19 @@ macro_rules! init_gen {
($fnn:ident, $gen:ident) => {
#[bench]
fn $fnn(b: &mut Bencher) {
- let mut rng: XorShiftRng = OsRng::new().unwrap().gen();
+ let mut rng = XorShiftRng::from_entropy();
b.iter(|| {
- let r2: $gen = rng.gen();
- black_box(r2);
+ let r2 = $gen::from_rng(&mut rng).unwrap();
+ r2
});
}
}
}
init_gen!(init_xorshift, XorShiftRng);
+init_gen!(init_lcg64_xsh32, Lcg64Xsh32);
+init_gen!(init_mcg128_xsh64, Mcg128Xsl64);
+init_gen!(init_hc128, Hc128Rng);
init_gen!(init_isaac, IsaacRng);
init_gen!(init_isaac64, Isaac64Rng);
init_gen!(init_chacha, ChaChaRng);
@@ -128,6 +133,68 @@ init_gen!(init_chacha, ChaChaRng);
#[bench]
fn init_jitter(b: &mut Bencher) {
b.iter(|| {
- black_box(JitterRng::new().unwrap());
+ JitterRng::new().unwrap()
+ });
+}
+
+
+const RESEEDING_THRESHOLD: u64 = 1024*1024*1024; // something high enough to get
+ // deterministic measurements
+
+#[bench]
+fn reseeding_hc128_bytes(b: &mut Bencher) {
+ let mut rng = ReseedingRng::new(Hc128Core::from_entropy(),
+ RESEEDING_THRESHOLD,
+ EntropyRng::new());
+ let mut buf = [0u8; BYTES_LEN];
+ b.iter(|| {
+ for _ in 0..RAND_BENCH_N {
+ rng.fill_bytes(&mut buf);
+ black_box(buf);
+ }
});
+ b.bytes = BYTES_LEN as u64 * RAND_BENCH_N;
+}
+
+macro_rules! reseeding_uint {
+ ($fnn:ident, $ty:ty) => {
+ #[bench]
+ fn $fnn(b: &mut Bencher) {
+ let mut rng = ReseedingRng::new(Hc128Core::from_entropy(),
+ RESEEDING_THRESHOLD,
+ EntropyRng::new());
+ b.iter(|| {
+ let mut accum: $ty = 0;
+ for _ in 0..RAND_BENCH_N {
+ accum = accum.wrapping_add(rng.gen::<$ty>());
+ }
+ accum
+ });
+ b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N;
+ }
+ }
+}
+
+reseeding_uint!(reseeding_hc128_u32, u32);
+reseeding_uint!(reseeding_hc128_u64, u64);
+
+
+macro_rules! threadrng_uint {
+ ($fnn:ident, $ty:ty) => {
+ #[bench]
+ fn $fnn(b: &mut Bencher) {
+ let mut rng = thread_rng();
+ b.iter(|| {
+ let mut accum: $ty = 0;
+ for _ in 0..RAND_BENCH_N {
+ accum = accum.wrapping_add(rng.gen::<$ty>());
+ }
+ accum
+ });
+ b.bytes = size_of::<$ty>() as u64 * RAND_BENCH_N;
+ }
+ }
}
+
+threadrng_uint!(thread_rng_u32, u32);
+threadrng_uint!(thread_rng_u64, u64);
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-17 06:00:47 +0000