Vincent Herlemont
29 lines
1.1 KiB
Rust
29 lines
1.1 KiB
Rust
/// Found a way to prepend bytes at the beginning of a Vec<u8> with a constant overhead.
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use bincode::{Decode, Encode};
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use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion};
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fn criterion_benchmark(c: &mut Criterion) {
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let mut group = c.benchmark_group("encode");
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// 1 byte, 1KB, 1MB, 10MB, 100MB
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for nb_bytes in [1, 1024, 1024 * 1024, 10 * 1024 * 1024, 100 * 1024 * 1024].into_iter() {
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group.throughput(criterion::Throughput::Bytes(nb_bytes as u64));
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let header: Vec<u8> = vec![0; 4];
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let mut data: Vec<u8> = vec![1; nb_bytes];
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group.bench_function(BenchmarkId::new("prepend_bytes", nb_bytes), |b| {
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b.iter(|| {
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// Fastest way to prepend bytes to data
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let mut header = header.clone();
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header.append(&mut data);
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// prepend bytes to data
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// let mut header = header.clone();
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// header.extend_from_slice(&data);
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});
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});
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}
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}
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criterion_group!(benches, criterion_benchmark);
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criterion_main!(benches);
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