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109 lines
2.8 KiB
Rust
109 lines
2.8 KiB
Rust
//! This file contains benchmarks of the query performance for the HashTree structure.
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use itertools::*;
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use criterion::black_box;
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use criterion::criterion_group;
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use criterion::criterion_main;
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use criterion::Criterion;
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use enso_data_structures::hash_map_tree::HashMapTree;
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use std::time::Duration;
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// =================
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// === Utilities ===
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// =================
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/// The base configuration for the benchmarks.
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fn bench_config() -> Criterion {
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Criterion::default()
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.measurement_time(Duration::from_secs(60))
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.warm_up_time(Duration::from_secs(3))
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.sample_size(25)
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.retain_baseline("Tree".to_string())
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}
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/// Create a tree where each node has `width` branches, up to a maximum depth of `depth`.
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fn gen_tree(width: usize, depth: usize) -> HashMapTree<usize, usize> {
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let mut tree = HashMapTree::<usize, usize>::default();
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let paths = (0..width).permutations(depth);
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paths.into_iter().for_each(|p| tree.set(p, 1));
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tree
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}
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// ==================
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// === Benchmarks ===
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// ==================
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// === Query ===
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/// A benchmark that tests querying a tree that has 10 branches at each node, and each node chain
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/// goes five nodes deep.
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fn wide_tree(c: &mut Criterion) {
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let tree = gen_tree(10, 5);
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let query: Vec<usize> = vec![1, 3, 2, 5, 9];
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c.bench_function("Wide Tree", |b| b.iter(|| tree.get(black_box(query.clone()))));
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}
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/// A benchmark that tests querying a tree that has 5 branches at each node, and each node chain
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/// goes ten nodes deep.
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fn deep_tree(c: &mut Criterion) {
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let tree = gen_tree(5, 10);
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let query: Vec<usize> = vec![1, 2, 4, 1, 3];
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c.bench_function("Deep Tree", |b| b.iter(|| tree.get(black_box(query.clone()))));
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}
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criterion_group! {
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name = tree_query_benchmarks;
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config = bench_config();
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targets = wide_tree,deep_tree
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}
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// === Traversal ===
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fn clone(c: &mut Criterion) {
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let tree = gen_tree(10, 5);
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c.bench_function("Clone", |b| b.iter(|| black_box(tree.clone())));
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}
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fn map(c: &mut Criterion) {
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let tree = gen_tree(10, 5);
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c.bench_function("Map", |b| {
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b.iter(|| {
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let tree = tree.clone();
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black_box(
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tree.iter().map(black_box(|(k, v)| (k, v * 2))).collect::<HashMapTree<_, _>>(),
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);
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})
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});
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}
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fn map_in_place(c: &mut Criterion) {
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let tree = gen_tree(10, 5);
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c.bench_function("Map in Place", |b| {
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b.iter(|| {
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let mut tree = tree.clone();
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tree.iter_mut().for_each(black_box(|(_, v): (Vec<&usize>, &mut usize)| *v *= 2));
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})
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});
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}
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criterion_group! {
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name = tree_traversal_benchmarks;
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config = bench_config();
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targets = clone,map,map_in_place
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}
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// ==============
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// === Runner ===
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// ==============
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criterion_main!(tree_query_benchmarks, tree_traversal_benchmarks);
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