备忘下：

保证90%请求都能被响应的最小耗时

 

The tp90 is a minimum time under which 90% of requests have been served.

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.

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