在 JMeter 中录制场景后要做什么？

Question

I am currently recording some scenarios for load testing an application using JMeter. I see that there are a ton of HTTP requests recorded (all with the hostname of the app under test). I want to know what are the clean up steps to do after recording these samples? Ex: Consider that I am recording "Modifying an entry" scenario. In this case, my recorded samples include all the steps I performed:

1. Loading all entries as a list,
2. selecting & loading the required entry on full screen,
3. saving the modified entry to the db and
4. displaying all the entries as list once again.

My questions:

• Should I keep HTTP requests related to all steps (1-4) or just keep the HTTP requests of step 3 as they are the ones directly related to calling the modify API?
• what are the other cleanup steps I should before starting my load testing?

Running all these requests for each of the scenarios under test for 2 concurrent users gives me response times as large as 26 seconds per scenario whereas while performing the same steps in the app UI takes much smaller time than that. So I need some guidance in knowing the best practices to do after recording the samples so that my LT results are accurate.

Answer 1

There is only one best practice: JMeter test needs to replicate the real user using your application via the real browser with 100% accuracy.

If you get higher response times with JMeter it may be caused by:

1. Incorrect recorder configuration when it comes to handling embedded resources (images, scripts, styles, fonts, sounds), you should not be recording these calls but rather configure JMeter to automatically download them using parallel thread pool of 6 users

   

   

2. HTTP Cache Manager is missing

3. AJAX calls which browser executes in parallel are executed sequentially in JMeter

I cannot suggest on your test design when it comes to business actions implementation as I don't know the expected flows, again you need to inspect what requests are under the hood of real user actions using browser developer tools and configure JMeter to send exactly the same requests implementing this or that action.

You can avoid copying and pasting repeating parts of the user action flows by introducing Module Controllers