ruby-prof 0.13.1-1 (i386 binary) in ubuntu trusty

 ruby-prof runs a ruby program and keeps track of the amount of time spent
 in each method. At the end of execution it displays collected information.
 Its features include:
   * Speed - it is a C extension and therefore many times faster than
     the standard Ruby profiler.
   * Flat Profiles - similar to the reports generated by the standard
     Ruby profiler.
   * Graph profiles - similar to GProf, these show how long a method
     runs, which methods call it and which methods it calls.
   * Threads - supports profiling multiple threads simultaneously.
   * Recursive calls - supports profiling recursive method calls.
   * Reports - can generate both text and cross-referenced html reports.
   * Output - can output to standard out or to a file.