benchmark code itself

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DarkCat09 2024-09-15 18:27:30 +04:00
parent 3e0fdf5fd7
commit bc41d9631b
Signed by: DarkCat09
GPG key ID: BD3CE9B65916CD82
5 changed files with 833 additions and 0 deletions

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checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
[[package]]
name = "windows_x86_64_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
[[package]]
name = "zerocopy"
version = "0.7.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
dependencies = [
"byteorder",
"zerocopy-derive",
]
[[package]]
name = "zerocopy-derive"
version = "0.7.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
dependencies = [
"proc-macro2",
"quote",
"syn",
]

9
Cargo.toml Normal file
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@ -0,0 +1,9 @@
[package]
name = "html-rs-bench"
version = "0.1.0"
edition = "2021"
[dependencies]
html5ever = "0.27.0"
scraper = "0.20.0"
tl = "0.7.8"

37
README.md Normal file
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Benchmark Rust libraries working with HTML:
- [`scraper`](https://crates.io/crates/scraper) (built with [`html5ever`](https://crates.io/crates/html5ever))
- [`tl`](https://crates.io/crates/tl)
- *(haven't found anything else that can build DOM, select an element and serialize)*
Output is unformatted CSV (probably because I'm lazy),
a nushell's `from csv` can be used to print a neat table.
Test results on my PC:
```
~/code/html-rs-bench> cargo run -r | save -f result; open result | from csv
Finished `release` profile [optimized] target(s) in 0.03s
Running `target/release/html-rs-bench`
╭───┬───────────┬─────────┬───────────┬───────────┬───────────┬────────────┬────────────┬────────────┬────────────┬────────────┬────────────╮
│ # │ engine │ page │ parse min │ parse avg │ parse max │ select min │ select avg │ select max │ serial min │ serial avg │ serial max │
├───┼───────────┼─────────┼───────────┼───────────┼───────────┼────────────┼────────────┼────────────┼────────────┼────────────┼────────────┤
│ 0 │ html5ever │ tochb │ 77.42 │ 78.08 │ 81.70 │ 0.00 │ 0.00 │ 0.02 │ 67.16 │ 67.75 │ 69.38 │
│ 1 │ html5ever │ android │ 123.75 │ 124.81 │ 126.88 │ 0.00 │ 0.00 │ 0.02 │ 66.44 │ 66.74 │ 66.99 │
│ 2 │ html5ever │ 10mb │ 135.00 │ 135.34 │ 136.73 │ 0.00 │ 0.00 │ 0.02 │ 248.11 │ 248.69 │ 249.58 │
│ 3 │ tl │ tochb │ 19.60 │ 19.72 │ 20.00 │ 0.00 │ 0.00 │ 0.02 │ 1024.16 │ 1025.30 │ 1027.68 │
│ 4 │ tl │ android │ 11.68 │ 11.78 │ 11.96 │ 0.00 │ 0.00 │ 0.02 │ 82.70 │ 84.07 │ 92.40 │
│ 5 │ tl │ 10mb │ 2.09 │ 2.14 │ 2.24 │ 0.00 │ 0.00 │ 0.00 │ 14.04 │ 14.19 │ 14.56 │
╰───┴───────────┴─────────┴───────────┴───────────┴───────────┴────────────┴────────────┴────────────┴────────────┴────────────┴────────────╯
```
Keep in mind that, despite `tl` being really fast (except serializing many tags in `tochb` sample),
it's not a browser-grade parser, and also that it doesn't fully support the CSS selector syntax
(e.g. `a[data-abc]` is OK, but not `a[data-abc="123"]`).
I do not own anything in the sample HTML pages. Here are the sources:
- `tochb` - [Dictionary of Tocharian B](https://www.win.tue.nl/~aeb/natlang/ie/tochB.html)
- `android` - [BluetoothDevice Android API reference](https://developer.android.com/reference/android/bluetooth/BluetoothDevice)
- `10mb` - [Random 10MB page with Shakespeare's poem](https://github.com/adriancbjie/my-kitty-cat/raw/master/web/staticpages/10MB.html)
Size of developer.android.com is surprising...
It's ~3.8 MiB even for the API reference homepage.
It's bigger than the whole Tocharian-B dictionary.

126
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use std::time::Instant;
use scraper::{Html, Selector};
const SAMPLES: [(&str, &str, &str); 3] = [
("tochb", "a[name]", include_str!("../html/tochb.html")),
(
"android",
".devsite-top-logo-row",
include_str!("../html/android.html"),
),
("10mb", "b", include_str!("../html/10mb.html")),
];
fn main() {
println!(concat!(
"engine,page,",
"parse min,parse avg,parse max,",
"select min,select avg,select max,",
"serial min,serial avg,serial max",
));
run::<ScraperEngine>();
run::<TlEngine>();
}
fn run<E: Engine>() {
for (page_name, selector, content) in SAMPLES {
print!("{},{}", E::NAME, page_name);
// parse, build DOM
let dom = {
bench(20, || {
E::parse(content);
});
E::parse(content)
};
// find elem
bench(10000, || {
dom.select(selector);
});
// serialize
bench(10, || {
assert!(!dom.serialize().is_empty());
});
println!();
}
}
fn bench(repeats: u16, cb: impl Fn()) {
let mut min = f64::INFINITY;
let mut max = 0.0;
let mut sum = 0.0;
for _ in 0..repeats {
let start = Instant::now();
cb();
let delta = Instant::now() - start;
let millis = delta.as_nanos() as f64 / 1_000_000.0;
if millis < min {
min = millis;
}
if millis > max {
max = millis;
}
sum += millis;
}
print!(",{:.5},{:.5},{:.5}", min, sum / repeats as f64, max);
}
trait Engine {
const NAME: &'static str;
fn parse(doc: &str) -> impl Document;
}
trait Document<'d> {
fn select(&self, pattern: &str);
fn serialize(&self) -> String;
}
pub struct ScraperEngine;
impl Engine for ScraperEngine {
const NAME: &'static str = "html5ever";
fn parse(doc: &str) -> impl Document<'_> {
ScraperDocument(Html::parse_document(doc))
}
}
pub struct ScraperDocument(Html);
impl Document<'_> for ScraperDocument {
fn select(&self, pattern: &str) {
self.0
.select(&Selector::parse(pattern).unwrap())
.next()
.unwrap();
}
fn serialize(&self) -> String {
self.0.html()
}
}
pub struct TlEngine;
impl Engine for TlEngine {
const NAME: &'static str = "tl";
fn parse(doc: &str) -> impl Document<'_> {
TlDocument(tl::parse(doc, tl::ParserOptions::default()).unwrap())
}
}
pub struct TlDocument<'d>(tl::VDom<'d>);
impl Document<'_> for TlDocument<'_> {
fn select(&self, pattern: &str) {
self.0.query_selector(pattern).unwrap().next().unwrap();
}
fn serialize(&self) -> String {
self.0.outer_html()
}
}