From: Charles Oliver Nutter <charles.nutter@...>
Date: 2008-01-09T10:14:59+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.

Wow, that's great to hear. There are a few experimental options you can 
see running jruby --properties that might boost it further. They're not 
all 100% safe, and may have side effects, but you can try them anyway 
and see how the performance comes out.

Especially look at -J-Djruby.compile.frameless, which improves some 
benchmarks by a factor of 3.

- Charlie