def show_progress(self):
        if self.in_progress_hanging:
            sys.stdout.write('.')
            sys.stdout.flush()
get max from internal histogram
dataset/ETHPy150Open femmerling/backyard/virtualenv.py/Logger.show_progress--crossover with--dataset/ETHPy150Open omergertel/pyformance/pyformance/meters/timer.py/Timer.get_max