GNU wc is actually fairly fast for what it does. That being said, even with all the extra stuff it's doing, I'd assume it to perform roughly as well as your si

GNU wc is actually fairly fast for what it does. That being said, even with all the extra stuff it's doing, I'd assume it to perform roughly as well as your single-threaded version (when you use a non-multibyte locale to keep the comparison even remotely fair).