Load Testing

[user1234]

How to do load testing with selenium?

[David Lai]

Generally you don't load test with selenium.  You're wasting tons of processing power and rendering the page that could be used to generate more load.  There a tons of free tools out there for load testing.  Jmeter, Seige, Grider

[Steve Rencilin]

On Tuesday, September 3, 2013 2:16:53 PM UTC+5:30, user1234 wrote:

How to do load testing with selenium?

I think there is ways to run selenium scripts in Jmeter...

[Ashish Juyal]

Hi Steve ,

               kindly share your idea to use selenium in Jmeter.

Regards

Ashish Juyal

[黄吉浩]

Really I don't know there is a way to run selenium scritps in Jmeter. Also I think there is no meaning.

Selenium is focus on the correct and extensive functions of the application. Yet Jemter is focus on the performance of the system, so Jemter is working by testing only very little but typical functions of the system to estimate the performance of the system.

Even you can reuse selenium scripts in Jemter, there is still much work to do. So why don't we just directly use jmeter from the beginning?

[Mark Collin]

JMeter Plugins has a WebDriverSampler:

http://jmeter-plugins.org/wiki/WebDriverSet/

That being said I think it's pretty stupid to use your Selenium scripts to do performance testing.  You will spend a lot of you time manipulating the GUI with your Selenium tests, but load testing programs liek JMeter have no concept of GUI, they are all about hitting the server and requesting resources.

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[David Lai]

I don't think there's much added value to using Selenium on top of Jmeter, or any java based load testing tool.

The idea of load test is to simulate the traffic profile of as many users as possible to test if a server can handle the load.  Selenium is designed more for user acceptance testing, where you are testing on the user experience.

You can however, use a load testing tool like Jmeter to take the load to say 90+% capacity, then run a separate Selenium test to verify if the user experience is greatly impacted.  This can give you some insight on how well your services degrade.  

Running multiple instances of Selenium will not buy much on the load testing end (in fact take away since you're wasting resources), and also multiple instances of selenium running on the same machine will introduce a large amount of unreliability in the test itself, and not produce any useful results.