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Better benchmark

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This commit is contained in:
Emil Ernerfeldt
2025-01-02 02:09:05 +01:00
parent d2f75e974c
commit 2b5327164a
1 changed files with 9 additions and 13 deletions
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crates/egui_demo_lib/benches/benchmark.rs
+9 -13
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@@ -125,14 +125,12 @@ pub fn criterion_benchmark(c: &mut Criterion) {
});
});
c.bench_function("text_layout_cached_with_modify", |b| {
const MAX_REMOVED_BYTES: usize = 5000;
c.bench_function("text_layout_cached_many_lines_modified", |b| {
const NUM_LINES: usize = 2_000;
let mut string = String::new();
// 2000 lines * 200 bytes * ~3 characters = 1.2MB
string.reserve(2000 * 200 * 3 + 2000);
for _ in 0..2000 {
for i in 0..200u8 {
for _ in 0..NUM_LINES {
for i in 0..30_u8 {
write!(string, "{i:02X} ").unwrap();
}
string.push('\n');
@@ -141,15 +139,13 @@ pub fn criterion_benchmark(c: &mut Criterion) {
let mut rng = rand::thread_rng();
b.iter(|| {
fonts.begin_pass(pixels_per_point, max_texture_side);
let mut temp_string = String::with_capacity(string.len());
let modified_start = rng.gen_range(0..string.len());
let max_end = (modified_start + MAX_REMOVED_BYTES).min(string.len());
let modified_end = rng.gen_range(modified_start..max_end);
temp_string.push_str(&string[..modified_start]);
temp_string.push_str(&string[modified_end..]);
// Delete a random character, simulating a user making an edit in a long file:
let mut new_string = string.clone();
let idx = rng.gen_range(0..string.len());
new_string.remove(idx);
fonts.layout(temp_string, font_id.clone(), text_color, wrap_width);
fonts.layout(new_string, font_id.clone(), text_color, wrap_width);
});
});