class ActiveSupport::Testing::Performance::Metrics::CpuTime

def initialize(*args)
  # FIXME: yeah my CPU is 2.33 GHz
  RubyProf.cpu_frequency = 2.33e9 unless RubyProf.cpu_frequency > 0
  super
end

def measure
  ManagementFactory.thread_mx_bean.get_current_thread_cpu_time / 1000 / 1000 / 1000.0 # seconds
end

def measure
  RubyProf.measure_cpu_time
end