while True:
        start = time.time()
        print(buffering)
        if buffering:
            with open(file=file_path, buffering=buffering, encoding=encoding) as file:
                file.read()
        else:
            with open(file=file_path, encoding=encoding) as file:
                file.read()
            buffering = 1

        end = time.time()
        result_old = result_new
        result_new = end - start
        print(result_old)
        print(result_new)
        if i:
            if result_new > result_old:
                print('Минимальное время выполнения: {0:.20f} секунд.'.format(result_old))
                print('Buffer size: ' + str(buffering))
                break
            else:
                if buffering == 1:
                    buffering = 2
                else:
                    buffering = buffering ** 2
        i += 1