Metrics for Java's Virtual Machine(JVM) are often compared to .NET and other platforms like PHP and Python. But how does the JVM fair when an application is written in different JVM-compatible languages ? This post by Tiago Fernandez analyzes various performances metrics comparing Groovy, JRuby and Scala. Read Tiago Fernandez's post 'Java Integration with Groovy, JRuby and Scala': http://tiagofernandez.blogspot.com/2009/05/java-integration-with-groovy-jruby-and.html