JMETER and Selenium WebDriver are experiencing issues with executing multiple threads efficiently

Currently, I am attempting to execute a test for 5 - 10 users using WebDriver Sampler within JMeter. I have successfully configured Chrome Driver and included the necessary WebDriver Sampler code. Interestingly, when running the test for only 1 user, everything works as expected without any issues. However, as soon as I attempt to run it for multiple users, the test fails at certain points where some dropdowns cannot be located. Only one thread passes while the others fail. Is there a way to run the test for multiple threads simultaneously in the background?

Here is the structure of my JMeter configuration for reference.

I have experimented with the WebDriver Sampler for 5 - 10 users, but it only seems to work for 1 user so far. I hope to achieve similar success across all threads. Alternatively, could someone provide guidance on how to execute the same code in Headless mode?

selenium-webdriverjmeterperformance-testing

Answer №1

Avoid using Selenium for performance testing.

According to the Selenium website:

It is generally not recommended to perform performance testing with Selenium and WebDriver. While they are capable, they are not optimized for this purpose and may not provide accurate results.

The JMeter Plugins website also states:

It is not the goal of this project to replace the HTTP Samplers in JMeter. Instead, it aims to enhance them by measuring end user load time.

Instead of troubleshooting issues with multiple browsers, it is suggested to switch to the HTTP protocol and configure JMeter to simulate a real browser.

In response to your questions:

  • Ensure your computer meets the necessary requirements. For example, Firefox 114 requires 1 CPU core and 2 GB of RAM per instance. If your machine has less than 24 GB of RAM, it is not advisable to run 10 browsers simultaneously.
  • If "dropdowns" do not appear immediately, consider adjusting default timeouts or utilizing Selenium Waits.

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