Daniel Lucraft has released a new Ruby level profiler for JRuby.

Jruby-prof 0.1.0 has an HTML Call Tree view, in order to avoid the problem of every eval or render being merged into one. It also has a Text Call Tree output, where Methods appear more than once, in relation to when they were called; and a browsable HTML Call Tree.

Please note that this gem is still in the early stages, and is not yet thread safe. Please see Lucraft's blog for more information on Jruby-prof 0.1.0.