使用正则表达式在Jmeter中提取多个值

Question

在我的脚本中，我正在使用多个（将近10个）正则表达式来提取值，我的问题是，如果有人可以解释我的影响，它将对响应时间产生影响。

Answer 1

Simple answer would be.. it depends on the regexes you are using and the amount of data you are working on.

Regex engine parses the input string by attempting all permutations at every character, even backtracking in some cases. This (the number of steps taken to match) is proportional to the size of the string you are using.

So, Yes.. it would affect your regex performance.. but not the response time of itself.