JRuby getting lots of attention lately

Of course while I'm away, toiling on projects using Spring/Hibernate, JBoss/EJB3/GWT things with the JRuby world get really exciting.  New versions of JRuby are rolling out everytime you turn around and the gems and projects that run on jruby are getting refreshed daily it seems.  Here are just some of the highlights I've seen fly by...

• JRuby 1.1.6RC1 released (final due next week)


• Glassfish gem 0.9.1 released (with latest Glassfish v3 server inside)


• Rails 2.2 released and JRuby mentioned right there in the title... wasn't long ago when the jruby team was fighting to get Rails even run on it's implementation.


• Mike Herrick and his team are seeing incremental performance improvements for jruby releases...

Hopefully I'll get some time of the holidays to dust off some of my (now old) projects and give them a whirl with all the new hotness... I'd love to do some more benchmarks and see if the thread-safety of Rails does anything to improve things on jruby outright.  Of course, I'll post results if I can get around to it.

For a sort of realtime look at what folks are doing with jruby:

• http://search.twitter.com/search?q=jruby

So where is Pogo?

I just remembered a while back AT&T was looking to get into the browser market with Pogo.  Some of the features look interesting... but where is it?

Taking a look through Google Chrome's eyes

Google just released their new browser on the windows world... figured I'd give it a shot.

Google Chrome

Have already found and reported a few minor issues... some javascript horking.  In all, I dig the UI.  Could maybe use a "manage bookmarks" feature.  Maybe it's in here somewhere. 

(NOTE: posting this from chrome right now... found another JS issue.)

Interesting... that is all

Just read this post...

Just saying... it's interesting.  Seems to be a lot of the benchmarking bug going around these days.

JRuby slowdown from Rails 2.0.2 to 2.1.0

Before you decide to bring your current JRuby on Rails app to the latest 2.1.0 version... you may want to take a look at the performance. I was running the console benchmark from this blog post with jruby trunk and saw some numbers I wasn't expecting:
[sourcecode language="ruby"]
in console: 6.times {puts Benchmark.measure {10000.times {Person.find :first}}.total}
4.47 : jruby 1.1.2 & rails 2.0.2 (jdbc) (best out of 6 runs)
5.43 : jruby 1.1.2 & rails 2.1.0 (jdbc)
4.12 : jruby 1.1.3 (trunk) & rails 2.0.2 (jdbc)
5.06 : jruby 1.1.3 (trunk) & rails 2.1.0 (jdbc)
[/sourcecode]

JRuby trunk IS faster than 1.1.2 as expected, but JRuby overall is experiencing a (pretty significant) slowdown when running Rails 2.1.0.

Hopefully finding the culprit for this slowdown will open the floodgates for improving JRuby on Rails performance.