That's a huge effort, kudos. Certainly, it is harder to get maximum performance from C, as sometimes you have to reorder things in non-trivial loops in order to

That's a huge effort, kudos. Certainly, it is harder to get maximum performance from C, as sometimes you have to reorder things in non-trivial loops in order to "help" the C compiler to get it "right" in the performance sense (many times involving function inlining and other things that usually increase code size/bloat). Although the problem of assembly-only is to be tied to just one platform, because currently not an issue for this case, with most web servers running on x86_64 CPUs, if allows to increase performance while reducing memory usage, it makes a lot of sense for super low cost architecture (tiny memory and CPU usage per active connection). It would be interesting to see how x86_64 implementation of specific elements compare to equivalent C code, in terms of instruction per clock efficiency, cache miss ratio, etc. (e.g. using the "perf" tool in Linux, or any other tool that use the CPU hardware counters).