You can expect it to be in the same ballpark as C or C++ for single-threaded code, especially if you use idiomatic Rust (combinators instead of manual iteration

You can expect it to be in the same ballpark as C or C++ for single-threaded code, especially if you use idiomatic Rust (combinators instead of manual iteration). Where Rust shines is that it often takes jaut a few minutes to turn a single-threaded program into a multithreaded program — and the type system guarantees that the program won't have data races.