<p>While I know IronRuby isn't quite ready for the world to use it, I was wondering if anyone here tried it and tested how well it faired against the other Rubies out there in terms of raw performance?</p>

<p>If so, what are the results, and how did you go about measuring the performance (which benchmarks etc)?</p>

<p><strong>Edit</strong>: The IronRuby team maintains a site on how they compare to Ruby MRI 1.8 at <a href="http://ironruby.info/" rel="nofollow noreferrer">http://ironruby.info/</a>. Below the spec pass rate table, they also have some information on how IronRuby performs on these specs. This table is not continuously updated, but I assume they update it often enough (you can see the last update at the top of the page).</p>

[{'answer_id': 38246, 'author': 'Nick Berardi', 'author_id': 17, 'author_profile': 'https://Stackoverflow.com/users/17', 'pm_score': 1, 'selected': False, 'text': "<p>I have used it and it has worked great for what I have done.  However my measuring of performance isn't really scientific, because it was all visual.  However I did notice that IronRuby seemed a little more snappier when I compared the two program on equal tasks.  I really think this had to do more with the strong and tight binding with IIS that .NET has more than the speed of the framework.</p>\n\n<p>But I could totally be wrong, because I didn't really stress my applications to the levels that Twitter might see.  But from my .NET experience I know it would hold up just as well if not better than current production Ruby applications.</p>\n\n<p>By the way I tested Ruby using FastCGI under IIS.</p>\n"}, {'answer_id': 38384, 'author': 'Mendelt', 'author_id': 3320, 'author_profile': 'https://Stackoverflow.com/users/3320', 'pm_score': 3, 'selected': True, 'text': '<p>According to this article <a href="http://www.iunknown.com/2008/05/ironruby-and-rails.html" rel="nofollow noreferrer">http://www.iunknown.com/2008/05/ironruby-and-rails.html</a>. In may performance was nowhere near where they expected it to be. I heard in <a href="http://altnetpodcast.com/episodes/9-state-of-ironruby" rel="nofollow noreferrer">http://altnetpodcast.com/episodes/9-state-of-ironruby</a> (3 days ago) that they\'re still working on performance. I guess they put compatability first and are now trying to get the performance up to par with other ruby implementations out there.</p>\n\n<p>As far as I understand they\'re not nearly as performant as Iron Python that is developed by the same team. I don\'t know if this is because Iron Ruby is using the DLR a lot more and that still needs to be optimized or if they need to optimize the Iron Ruby implementation itself more. But I guess it is good news because they can get it a lot faster. So if you\'re already happy with performance you\'ll get a lot happier.</p>\n'}, {'answer_id': 38402, 'author': 'Curt Hagenlocher', 'author_id': 533, 'author_profile': 'https://Stackoverflow.com/users/533', 'pm_score': 2, 'selected': False, 'text': '<p>The load time and the memory utilization are still the two weakest points in IronRuby.  Once a particular piece of code has been loaded and is running in a sort of steady-state mode -- that is, little to no new source is being evaluated -- then the performance should be quite good.</p>\n\n<p>To answer your specific question, consider <a href="http://blog.prokrams.com/2008/08/27/ironruby-vs-jruby-vs-mri-performance-mini-shootout/" rel="nofollow noreferrer">this data</a>.</p>\n'}, {'answer_id': 1310264, 'author': 'Sam Saffron', 'author_id': 17174, 'author_profile': 'https://Stackoverflow.com/users/17174', 'pm_score': 3, 'selected': False, 'text': '<p>Antonio Cangiano just published <a href="http://antoniocangiano.com/2009/08/03/performance-of-ironruby-ruby-on-windows/" rel="nofollow noreferrer">some new benchmarks</a> (August 09), IronRuby seems to be faster across that board than MRI under Windows. John Lam and co have done a fantastic job and are not done optimising. </p>\n'}]
['https://Stackoverflow.com/questions/38235', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2018/']