Hyperfine is a great tool but when I was using it at Deno to benchmark startup time there was a lot of weirdness around the operating system apparently caching inodes of executables.
If you are looking at shaving sub 20ms numbers, be aware you may need to pull tricks on macos especially to get real numbers.
If you are looking at shaving sub 20ms numbers, be aware you may need to pull tricks on macos especially to get real numbers.