Sampling process 49961 for 1 seconds with 1 millisecond of run time between samples
Sampling completed, processing symbols...
Analysis of sampling rubinius.local.bin (pid 49961) every 1 millisecond
Call graph:
    755 Thread_2503
      755 start
        755 main
          755 environment_load_machine
            755 machine_run_file
              755 cpu_run
                755 _cpu_ss_mono_ffi
                  755 ffi_call_libffi
                    755 ffi_call
                      755 .LCFI1
                        755 ffi_getnameinfo
                          755 getnameinfo
                            755 LI_DSLookupQuery
                              755 libinfoDSmig_Query
                                755 mach_msg
                                  755 mach_msg_trap
                                    755 mach_msg_trap

Total number in stack (recursive counted multiple, when >=5):

Sort by top of stack, same collapsed (when >= 5):
        mach_msg_trap        755
Sample analysis of process 49961 written to file /dev/stdout