From: Robert Klemme <shortcutter@...>
Date: 2008-06-01T21:04:42+09:00
Subject: Re: Huge performance gap

On 01.06.2008 03:14, Charles Oliver Nutter wrote:
> Roger Pack wrote:
>> Maybe something is possible along the lines of
>>
>> vm_optimized :no_frame_pointer, :fast_math, :no_thread_checkpointing do
>>       # some code that should run very fast
>> end
>>
>> :)
>> Thanks for your work :)
>> -R
> 
> Yeah, I'm looking into those possibilities, trying to find a 
> nonintrusive way to introduce compiler pragmas that we could use for 
> implementing parts of JRuby in Ruby code (or that others could use). For 
> example, something like this (a bogus name...I don't want to reveal any 
> pragmas yet):
> 
> def foo
>    ____NO_FRAMING = true
> end

That's an interesting idea, but I'd rather separate Ruby code from 
platform specific options.  So I'd prefer command line arguments to the 
engine (as you presented before) or a smart mechanism to store switches 
externally (e.g. .rc file).  Ideally there would even be a mechanism 
that finds optimal switches automatically, but I guess that would be 
really hard. :-)

Kind regards

	robert