atesterlol: https://gist.github.com/Dirbaio/ef6758162579e95410039f00c1eda2d8 ``` [dirbaio@mars copybench]$ dd if=/dev/urandom of=src.bin bs=1M count=100 100+0 records in 100+0 records out 104857600 bytes (105 MB, 100 MiB) copied, 0.228219 s, 459 MB/s [dirbaio@mars copybench]$ cargo run --release Finished `release` profile [optimized] target(s) in 0.00s Running `target/release/copybench` direct, io::copy: 80ms direct, manual_copy: 374ms wrapper, io::copy: 359ms wrapper, manual_copy: 337ms ```