1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
fn main() -> std::io::Result<()> {
use perf_event::{Builder, Group};
use perf_event::events::Hardware;
let mut group = Group::new()?;
let cycles = Builder::new().group(&mut group).kind(Hardware::CPU_CYCLES).build()?;
let insns = Builder::new().group(&mut group).kind(Hardware::INSTRUCTIONS).build()?;
let vec = (0..=51).collect::<Vec<_>>();
group.enable()?;
println!("{:?}", vec);
group.disable()?;
let counts = group.read()?;
println!("cycles / instructions: {} / {} ({:.2} cpi)",
counts[&cycles],
counts[&insns],
(counts[&cycles] as f64 / counts[&insns] as f64));
Ok(())
}
|
