I have been searching for a grails plugin that ca be used to simulate requests. I have a jersey service that calls some helper methods and I'm trying to check if any of these methods are bottleneck method, I found this **[JavaMelody Grails Plugin](http://grails.org/plugin/grails-melody)**, . But, this tool does not create request simulation, it rather measure the actual traffic.

Anybody knows a free profiler that can drill down to the helper methods level?