Crate benchmarking

Expand description

Benchmarking

This crate can be used to execute something and measure the execution time. It does not output anything to screens and filesystems.

Examples

const VEC_LENGTH: usize = 100;

benchmarking::warm_up();

let bench_result = benchmarking::measure_function(|measurer| {
    let mut vec: Vec<usize> = Vec::with_capacity(VEC_LENGTH);

    unsafe {
        vec.set_len(VEC_LENGTH);
    }

    for i in 0..VEC_LENGTH {
        measurer.measure(|| vec[i]);
    }

    vec
})
.unwrap();

println!("Reading a number from a vec takes {:?}!", bench_result.elapsed());

const VEC_LENGTH: usize = 100;

benchmarking::warm_up();

let bench_result = benchmarking::measure_function(|measurer| {
    let mut vec: Vec<usize> = Vec::with_capacity(VEC_LENGTH);

    measurer.measure(|| {
        for i in 0..VEC_LENGTH {
            vec.push(i);
        }
    });

    vec
})
.unwrap();

println!("Filling 0 to 99 into a vec takes {:?}!", bench_result.elapsed());

const VEC_LENGTH: usize = 100;

benchmarking::warm_up();

let bench_result = benchmarking::measure_function(|measurer| {
    let mut vec: Vec<usize> = Vec::with_capacity(VEC_LENGTH);

    for loop_seq in 0..VEC_LENGTH {
        measurer.measure(|| {
            vec.push(loop_seq);
        });
    }

    vec
})
.unwrap();

println!("Pushing a number into a vec takes {:?}!", bench_result.elapsed());

const VEC_LENGTH: usize = 100;

benchmarking::warm_up();

let bench_result = benchmarking::measure_function_n(2, |measurers| {
    let mut vec: Vec<usize> = Vec::with_capacity(VEC_LENGTH);

    for i in 0..VEC_LENGTH {
        measurers[1].measure(|| {
            vec.push(i);
        });
    }

    for i in 0..VEC_LENGTH {
        measurers[0].measure(|| vec[i]);
    }

    vec
})
.unwrap();

println!("Reading a number from a vec takes {:?}!", bench_result[0].elapsed());
println!("Pushing a number into a vec takes {:?}!", bench_result[1].elapsed());

The warm_up and warm_up_with_duration functions of the benchmarking crate runs on one thread. To warm up all CPUs, you can use the warm_up_multi_thread and warm_up_multi_thread_with_duration functions instead. The measure_function and measure_function_with_times functions of the benchmarking crate can execute a closure for N times. To execute it repeatly for a while instead, you can use the bench_function and bench_function_with_duration functions. To execute a closure with multiple threads to measure the throughput, you can use the multi_thread_bench_function and multi_thread_bench_function_with_duration functions of the benchmarking crate.