From: Charles Oliver Nutter <charles.nutter@...>
Date: 2008-11-02T10:19:12+09:00
Subject: Re: [ANN] FFI 0.1.1 (Foreign Function Interface) for Ruby 1.8.6/7 and 1.9

Luc Heinrich wrote:
>          user     system      total        real
> ext  1.050000   0.320000   1.370000 (  1.373800)
> ffi  2.160000   0.660000   2.820000 (  2.818966)
> dl   3.500000   1.060000   4.560000 (  4.552789)
> 
> All this using MacPorts MRI 1.8.7-p72 under OS X 10.5.5. The observed 
> overhead is slightly over 2x for ffi, probably not a big deal unless ffi 
> calls are used in tight loops I guess.

Seems like that pretty well seals the deal for ffi over dl, at the very 
least. I'm also glad to see FFI wasn't even that bad, especially 
considering it hasn't received any optimization.

- Charlie