microcosm.blue
bad-example.com
+4
Cargo.toml
+4
Cargo.toml
+50
benches/huge-car.rs
+50
benches/huge-car.rs
···
1
+
extern crate repo_stream;
2
+
use futures::TryStreamExt;
3
+
use iroh_car::CarReader;
4
+
use std::convert::Infallible;
5
+
use std::path::{Path, PathBuf};
6
+
7
+
use criterion::{Criterion, criterion_group, criterion_main};
8
+
9
+
pub fn criterion_benchmark(c: &mut Criterion) {
10
+
let rt = tokio::runtime::Builder::new_multi_thread()
11
+
.enable_all()
12
+
.build()
13
+
.expect("Creating runtime failed");
14
+
15
+
let filename = std::env::var("HUGE_CAR").expect("HUGE_CAR env var");
16
+
let filename: PathBuf = filename.try_into().unwrap();
17
+
18
+
c.bench_function("huge-car", |b| {
19
+
b.to_async(&rt).iter(async || drive_car(&filename).await)
20
+
});
21
+
}
22
+
23
+
async fn drive_car(filename: impl AsRef<Path>) {
24
+
let reader = tokio::fs::File::open(filename).await.unwrap();
25
+
let reader = tokio::io::BufReader::new(reader);
26
+
let reader = CarReader::new(reader).await.unwrap();
27
+
28
+
let root = reader
29
+
.header()
30
+
.roots()
31
+
.first()
32
+
.ok_or("missing root")
33
+
.unwrap()
34
+
.clone();
35
+
36
+
let stream = std::pin::pin!(reader.stream());
37
+
38
+
let (_commit, v) =
39
+
repo_stream::drive::Vehicle::init(root, stream, |block| Ok::<_, Infallible>(block.len()))
40
+
.await
41
+
.unwrap();
42
+
let mut record_stream = std::pin::pin!(v.stream());
43
+
44
+
while let Some(_) = record_stream.try_next().await.unwrap() {
45
+
// just here for the drive
46
+
}
47
+
}
48
+
49
+
criterion_group!(benches, criterion_benchmark);
50
+
criterion_main!(benches);
+19
-2
readme.md
+19
-2
readme.md
···
3
3
Fast and (aspirationally) robust atproto CAR file processing in rust
4
4
5
5
6
+
current car processing times (records processed into their length usize, phil's dev machine):
7
+
8
+
- 128MiB CAR file: `347ms`
9
+
- 5.0MiB: `6.1ms`
10
+
- 279KiB: `139us`
11
+
- 3.4KiB: `4.9us`
12
+
13
+
14
+
running the huge-car benchmark
15
+
16
+
- to avoid committing it to the repo, you have to pass it in through the env for now.
17
+
18
+
```bash
19
+
HUGE_CAR=~/Downloads/did_plc_redacted.car cargo bench -- huge-car
20
+
```
21
+
22
+
6
23
todo
7
24
8
-
- [ ] car file test fixtures & validation tests
25
+
- [x] car file test fixtures & validation tests
9
26
- [ ] make sure we can get the did and signature out for verification
10
27
- [ ] spec compliance todos
11
28
- [ ] assert that keys are ordered and fail if not
···
13
30
- [ ] performance todos
14
31
- [ ] consume the serialized nodes into a mutable efficient format
15
32
- [ ] maybe customize the deserialize impl to do that directly?
16
-
- [ ] benchmark and profile
33
+
- [x] benchmark and profile
17
34
- [ ] robustness todos
18
35
- [ ] swap the blocks hashmap for a BlockStore trait that can be dumped to redb
19
36
- [ ] maybe keep the redb function behind a feature flag?