From: Jeff Pritchard <jp@...>
Date: 2006-07-15T00:24:38+09:00
Subject: Re: How to speed up ruby and make it as fast as possible

Peter,
I found your last paragraph intresting.  Can you give us some ballpark 
comparisons between a profiled/selectively C extensionized app and a 
completely re-written one?  I would think it would be almost as 
effective to render all of the significant bottlenecks in C and leave 
the rest in ruby.  Have you seen significant speed improvements by 
taking this last step of replacing the whole thing with C?

thanks,
jp


Peter Hickman wrote:
> Profile your code, see where the bottlenecks are and refine the
> algorithms. There are no real tricks, it all comes down to good coding
> that is aware of how the language is best used and how your application
> is structured to handle the commonest usage.
> 
> If this is a critical production thing then buy better hardware, it is
> invariably cheaper in the long term than trying to squeeze a few
> percentage points out of your code.
> 
> I also rewrite all my performance critical code in C, that is the whole
> application gets rewritten in C once I have used Ruby to prototype the 
> code.


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