On 11/19/2010 03:23 PM, Nick Sieger wrote: > On Fri, Nov 19, 2010 at 2:58 PM, Joel VanderWerf > <joelvanderwerf / gmail.com> wrote: >> On 11/19/2010 09:55 AM, Nick Sieger wrote: >>> >>> Actually, all you need to do is "gem install jruby-launcher" to get >>> the new version. >> >> Thanks! Should this be installed with MRI gem, or jruby gem ? >> > > JRuby! It will compile the native launcher for your system and install > it on top of the existing shell script in $JRUBY_HOME/bin. Works now, thanks! I'm looking at the output from both --profile and --sample. It seems that --profile measures only jruby methods, and --sample measures only java functions. (Or maybe --sample would show some of the jruby methods if they were taking enough time to be observed at a tick. My program is much more heavily bottlenecked in the java side at the moment.) Is there any possibility of --profile instrumenting both jruby and java code?