From: Charles Oliver Nutter <charles.nutter@...>
Date: 2008-01-09T10:59:32+09:00
Subject: Re: [ANN] JRuby 1.1 RC 1 Released

Sander Land wrote:
> With all the blog posts about JRuby being posted, I thought I would
> finally try JRuby myself.
> I tested it on my genetic algorithms library. Lots of metaprogramming
> going on in the initialization, and a lot of calculations afterwards
> using the generated modules and classes.
> 
> First tried my tests.
> Finished in 34.726 seconds.
> 33 tests, 626 assertions, 0 failures, 0 errors
> That's better than 1.9, which couldn't handle some of the metaprogramming.
> 
> Then tried a benchmark:
> 1.8  : 676.75 seconds  (ubuntu/apt-get)
> 1.9  : 161.99 seconds  (svn/-O3/no enable-pthread)
> JRuby: 302.23 seconds  (java opts -server, jruby +C)
> 
> Did JRuby just outperform 1.8 by a factor >2 ?
> I'm impressed. Great job JRuby team.

Also, depending on how your app runs, you may want to try without +C. +C 
can slow down the overall startup enough to be measurable, since it has 
to compile everything before running. Play with it, let us know what you 
find out. We want to have good defaults.

- Charlie