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collapse.rs
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collapse.rs
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extern crate criterion;
extern crate inferno;
use criterion::*;
use inferno::collapse::dtrace::{Folder as DFolder, Options as DOptions};
use inferno::collapse::perf::{Folder as PFolder, Options as POptions};
use inferno::collapse::Collapse;
use libflate::gzip::Decoder;
use std::fs::File;
use std::io::{BufReader, Cursor, Read};
fn dtrace_benchmark(c: &mut Criterion) {
let mut f = File::open("flamegraph/example-dtrace-stacks.txt").expect("file not found");
let mut bytes = Vec::new();
f.read_to_end(&mut bytes).expect("Could not read file");
let len = bytes.len();
c.bench(
"collapse",
ParameterizedBenchmark::new(
"dtrace",
move |b, data| {
b.iter(|| {
let reader = BufReader::new(data.as_slice());
let mut result = Cursor::new(Vec::with_capacity(len));
result.set_position(0);
let _folder = DFolder::from(DOptions::default()).collapse(reader, &mut result);
})
},
vec![bytes],
)
.throughput(|bytes| Throughput::Bytes(bytes.len() as u32)),
);
}
fn perf_benchmark(c: &mut Criterion) {
let f = File::open("flamegraph/example-perf-stacks.txt.gz").expect("file not found");
let mut bytes = Vec::new();
let mut r = BufReader::new(Decoder::new(f).unwrap());
r.read_to_end(&mut bytes).expect("Could not read file");
let len = bytes.len();
c.bench(
"collapse",
ParameterizedBenchmark::new(
"perf",
move |b, data| {
b.iter(|| {
let reader = BufReader::new(data.as_slice());
let mut result = Cursor::new(Vec::with_capacity(len));
result.set_position(0);
let _folder = PFolder::from(POptions::default()).collapse(reader, &mut result);
})
},
vec![bytes],
)
.throughput(|bytes| Throughput::Bytes(bytes.len() as u32)),
);
}
criterion_group!(benches, perf_benchmark, dtrace_benchmark);
criterion_main!(benches);