Basically need to see performance in two areas: pure algorithmic/io performance and http sever load.
Also done over single core vs moderately optimized code over multi-core cpus.
c/c++, D and alike: rust, zig are as just the same one compiling advanced method most likely also V, nim
so are as just the same efficiency, result's speed
just understand, ensure their correct equivalent codes translated one on one
and be wise not to humiliate ourselves waste works for 300-700 ms edge gain difference
... that's so stupid
PLs invented to solve something the most precisely by the most suitable one for which it's invented