test(tvix/eval): Add attr merge benchmarks

Add a quick couple of benchmarks for merging attribute sets, large and
small.

Change-Id: I26940a9cf4e0d30e3d9eb07a7b8c366ca4072ca3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6286
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: grfn <grfn@gws.fyi>
This commit is contained in:
Griffin Smith 2022-09-02 15:02:19 -04:00 committed by clbot
parent 48b0fac76b
commit 3270817b90
3 changed files with 19 additions and 1 deletions

1
tvix/eval/Cargo.lock generated
View file

@ -874,6 +874,7 @@ version = "0.1.0"
dependencies = [ dependencies = [
"criterion", "criterion",
"dirs", "dirs",
"itertools",
"path-clean", "path-clean",
"pretty_assertions", "pretty_assertions",
"rnix", "rnix",

View file

@ -23,6 +23,7 @@ rev = "614e7d4641e83ab7eb321d9ac5e3d12985f9f3ba"
criterion = "0.3.6" criterion = "0.3.6"
test-generator = "0.3.0" test-generator = "0.3.0"
pretty_assertions = "1.2.1" pretty_assertions = "1.2.1"
itertools = "0.10.3"
[features] [features]
# Enables running the Nix language test suite from the original C++ # Enables running the Nix language test suite from the original C++

View file

@ -1,9 +1,25 @@
use criterion::{black_box, criterion_group, criterion_main, Criterion}; use criterion::{black_box, criterion_group, criterion_main, Criterion};
use itertools::Itertools;
use tvix_eval::interpret; use tvix_eval::interpret;
fn eval_literals(c: &mut Criterion) { fn eval_literals(c: &mut Criterion) {
c.bench_function("int", |b| b.iter(|| black_box(interpret("42", None)))); c.bench_function("int", |b| b.iter(|| black_box(interpret("42", None))));
} }
criterion_group!(benches, eval_literals); fn eval_merge_attrs(c: &mut Criterion) {
c.bench_function("merge small attrs", |b| {
b.iter(|| black_box(interpret("{ a = 1; b = 2; } // { c = 3; }", None)))
});
c.bench_function("merge large attrs with small attrs", |b| {
let large_attrs = format!(
"{{{}}}",
(0..10000).map(|n| format!("a{n} = {n};")).join(" ")
);
let expr = format!("{large_attrs} // {{ c = 3; }}");
b.iter(move || black_box(interpret(&expr, None)))
});
}
criterion_group!(benches, eval_literals, eval_merge_attrs);
criterion_main!(benches); criterion_main!(benches);