Vibe.d - very low performance

[Marek via Digitalmars-d]

On Friday, 7 July 2017 at 19:03:52 UTC, Jacob Carlborg wrote:
> I think that vibe.d didn't take full advantage of multi core, 
> even when enabling threading support. Ruby, or rather Rails, 
> applications are usually run using multiple processes, which 
> allows to scale on a multi core CPU. You can do the same with 
> vibe.d as well.

So why Ruby or Python frameworks are much faster in this 
benchmark?