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This post is auto-generated from RSS feed The Rust Programming Language Forum - Latest topics. Source: Which is the fastest execution to write dynamic data to a socket among these options?

Hello, I'm searching for the fastest one for single threaded execution. Which one?

These are pseudo code (the syntax is not correct)

Number 1

let mut buf = String::with_capacity(1024)

fn run (input: &str) {
    write!(&mut buf, "data: {}", input)
    socket.write_all(buf.as_bytes())
}

let input = format!("number {}", 100)
run(&input)

Number 2

let mut buf = vec![0u8; 1024]

fn run (input: &str) {
    write!(&mut buf, "data: {}", input)
    socket.write_all(&buf)
}

let input = format!("number {}", 100)
run(&input)

Number 3

let mut buf = String::with_capacity(1024)

fn run (input: String) {
    write!(&mut buf, "data: {}", input)
    socket.write_all(buf.as_bytes())
}

let input = format!("number {}", 100)
run(input)

Number 4

let mut buf = vec![0u8; 1024]

fn run (input: String) {
    write!(&mut buf, "data: {}", input)
    socket.write_all(&buf)
}

let input = format!("number {}", 100)
run(input)

Number 5

let mut buf = vec![0u8; 1024]

fn run (input: &[u8]) {
    buf.extend_from_slices(input)
    socket.write_all(&buf)
}

let input = format!("number {}", 100)
run(input.as_bytes())

Number 6

let mut buf = vec![0u8; 1024]

fn run (mut input: Vec<u8>) {
    buf.append(&mut input)
    socket.write_all(&buf)
}

let input = format!("number {}", 100)
run(input.into_bytes())

Number 7

let mut buf = bytes::BytesMut::with_capacity(1024)

fn run (input: &[u8]) {
    buf.extend_from_slices(input)
    socket.write_all(&buf)
}

let input = format!("number {}", 100)
run(input.as_bytes())

Number 8, 9, 10 .... are the same except : using std::io::IoSlice and write_vectorized

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