More or less. There was a minor parser combinator arms race in the Rust community a few months ago using http parsing as the benchmark and my takeaway (only hal

More or less. There was a minor parser combinator arms race in the Rust community a few months ago using http parsing as the benchmark and my takeaway (only half paid attention, I haven't needed to write a parser) was that they got to roughly as fast as handwritten C parsers. Example: https://github.com/Geal/nom_benchmarks/tree/master/http https://github.com/Geal/nom_benchmarks/tree/master/http This hasn't translated into actual use in the Rust HTTP libs with hyper and rotor-http using their own handwritten parsers but I still think it might.