def create_reqs_waiting_times(events_per_minute):
    events_per_second = events_per_minute / 60
    requests_lst = np.random.poisson(events_per_second, 600)
    request_times = np.where(requests_lst != 0)[0]
    request_times = [repeated_time*0.1 for idx in range(0, len(request_times))
                     for repeated_time in [request_times[idx]] * requests_lst[request_times[idx]]]
    waiting_times = np.diff(request_times)
    waiting_times = np.cumsum(waiting_times)
    logging.info('waiting times are ready!')
    return waiting_times