CODEWITHSUNDEEP
jmeterjmeter-5.0
Janesh Kodikara
Janesh Kodikara

Reputation: 1841

How to test client side performance testing of single page application with JMeter

JMeter does not support the client side performance testing (verifying the content rendering time / page loading time) out of the box.

In single page applications requests are sent to the server as API calls. I am interested in verifying the client side page loading time for concurrent users with JMeter.

  1. What is the best way to test the SPA with JMeter ?

  2. Do you recommend Selenium WebDriver plugin?

  3. Is there any other tools that can be used to verify the client side load testing for concurrent users?

Upvotes: 0

Views: 2085

Answers (1)

Dmitri T
Dmitri T

Reputation: 168197

As per JMeter project main page:

JMeter is not a browser, it works at protocol level. As far as web-services and remote services are concerned, JMeter looks like a browser (or rather, multiple browsers); however JMeter does not perform all the actions supported by browsers. In particular, JMeter does not execute the Javascript found in HTML pages. Nor does it render the HTML pages as a browser does (it's possible to view the response as HTML etc., but the timings are not included in any samples, and only one sample in one thread is ever displayed at a time).

So I doubt whether it makes sense even to consider JMeter for pure frontend operation, most probably you're looking for Performance tab of your browser developer tools or more sophisticated solutions like Lighthouse or WebPageTest

With regards to WebDriver Sampler plugin, it just provides JMeter integration with Selenium browser automation framework so you will be able to launch a real browser per JMeter thread (virtual user) and the rest depends on your implementation, most probably you will want to query window.performance APIs values to get the metrics you're looking for via executeScript() function

Upvotes: 2

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