假设访问日志格式如下，我们想统计cancel这个服务的qps： [2017-04-25 15:31:11] service /ser1/cancel – – 175.57.2.60 77 94 0 0 – [2017-04-25 15:31:11] service /ser1/cancel – – 175.57.2.63 77 94 0 0 – [2017-04-25 15:31:11] service /ser1/cancel – – 175.57.2.64 77 94 0 0 – [2017