TP50、TP99

一段时间里，例如一分钟，50%，99%内的请求响应时间最大时间，换句话说 50%或99%都请求耗时都小于该值。

The tp90 is a minimum time under which 90% of requests have been served. (tp90是满足90％请求的最短时间。) tp90 = top percentile 90 Imagine you have response times:

10s

1000s

100s

2s

Calculating TP is very simple:

  1. Sort all times in ascending order: [2s, 10s, 100s, 1000s]

  2. find latest item in portion you need to calculate.

2.1 For TP50 it will be ceil(4*0.5) = 2 requests. You need 2nd request.

2.2 For TP90 it will be ceil(4*0.9) = 4. You need 4th request.

  1. We get time for the item found above. TP50=10s. TP90=1000s

同步环比

同比: 和上一周的 同一天对比
环比: 和前一天对比