Response time in LoadRunner result analysis

Some things are not complicated, but we do not pay attention to him, or we do not have a good concern, we use LR to do performance testing when there is a very important indicator, response time, we all know this indicator, but also know that this indicator can be found in the results analysis, But how many people know how these values are derived from LR? Today in this article I will give you the secret of this thing, some people say you write these things the purpose is, to tell you how to analyze the performance test results, I think about what I write for the analysis of the results of the performance test some help, But if you say that he is the performance test results analysis, I think it is not, not much nonsense to say we start.

1. Before reading this article, I think we should first of all have a certain understanding of LR, you need to know the following content:

1 LR In the response time statistics through the transaction, transaction is a set of functions, can be measured in the test script according to the business response time we want to define, if you do not understand can see a topic I wrote about LR things:

2 The response time given in LR results analysis is: maximum, average, minimum, standard deviation, 90% kinds, and also includes a curve of the average response time of an object.

3 The response time of LR is based on things, which can be obtained in the analysis of results.

4 best you are not unfamiliar with the functions in Excel

2. How do you get these response times in LR results analysis? Let's start by introducing:

1 First LR collects the response time of all things based on time shift, and collects these data as the basis of analysis.

2 The information collected above can be statistically obtained with maximum, average, minimum, standard deviation and 90% response time. And a curve that paints the average response time of things.

3 Average response time: Average response time in all things;

4 Maximum response time: Ask Max for all response times

5 Minimum response time: In the whole response time of things to ask Min

6 Standard deviation: To do the standard deviation operation in all the response time data of the thing

7) 90% response time: The whole response time is sorted and then the maximum value in 90% data is obtained.

8 The average response time curve, the number of points in the curve is related to the sampling time (can be set) and the test run time (of course, the selected data can be set, in the result analysis process can choose to extract that time data), each point data is calculated according to: in the sampling time range all things response time average.

3. How to verify that the above situation is right? You can use the following methods:

1 Set up a test scenario of LR, run to obtain the result data;

2 Open the result analysis tool to obtain the test result;

3 and then all the data in LR are imported into Excel for manual analysis (the concrete steps are not stated);

4 through the data statistic function in Excel, statistics of the largest, smallest, average, standard deviation (you can go to the Internet to check his meaning, I do not want to say, this is math), 90% response time, and then the LR results analysis in comparison with the data, you can verify your ideas.

What's the use of these things? You can say that he is useful, of course, for you may not use, but only to see a lively, then for all the people who see the lively as a fun, for useful people, you are again, the specific details of the deeper we can discuss.