benchmark (ActionController::RequestProfiler::Sandbox)

    # File lib/action_controller/request_profiler.rb, line 20
          def benchmark(n, profiling = false)
            @quiet = true
            print '  '

            result = Benchmark.realtime do
              n.times do |i|
                run(profiling)
                print_progress(i)
              end
            end

            puts
            result
          ensure
            @quiet = false
          end