IMO benchmarking is a way broader topic. Specifically a single fibonacci example is not a good performance indicator by any means. For instance let's assume V

IMO benchmarking is a way broader topic. Specifically a single fibonacci example is not a good performance indicator by any means. For instance let's assume V8 is faster in average at running this kind of nanobenchmarks (probably at least for now it is), but how much does it cost to convert non trivial data structures from Lisp to JS and back in a real case? I expect there will be a lot of back and forward if the system if JS and Lisp get mixed and have to cooperate. How much does it cost to go through foreign functions calls? This are just initial thoughts that are not accounted at all here. And even benchmarking nano-benchmarks can be surprisingly tricky ;) :) https://github.com/emacs-ng/emacs-ng/issues/187#issuecomment-802637690 https://github.com/emacs-ng/emacs-ng/issues/187#issuecomment...