Is Selenium a Performance Test Tool ?
Published by عادل on Wednesday, April 09, 2008 at 10:47 PM
It's possible, but it's not a great usage of Selenium. One reason is that actually starting that many browsers will create a lot of overhead on the machines they are running on. You'll end up wasting a lot more computing power than you have to.
Independent Thoughts:
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Like Haw-bin said you can use Selenium to do performance testing. Unfortunately I would liken it to using QTP to do performance testing. There is a lot of overhead just to do a performance test!
Functional automated testing tools like Selenium and QTP are better used for functional and regression testing. If you read my blog posting on what makes a good automated test you can see that having the re-usability is worth a lot more than the performance test in this case.
How do you use QTP for performance testing?
What i know is QTP is a functional testing automation tool. Maybe you mean LoadRunner or Jmeter?
Adel
The point I was trying make is that Selenium is a functional/Regression automated testing tool.
If you wanted, you could set up a few dozen machines with QTP and get a "performance" test going. The same could be said with Selenium and having a few dozen instances of the test running to get a performance test. It can be done but is it really worth it?
There have also been documented instances where Selenium doesn't scale well. In my blog post about what makes a good automated test there is a video attached. In there is a Google Farm Engineer complaining that Selenium doesn't scale well so can't be used as a performance tool.
Konstantin Petkov posted about how he tried to use it a performance tool (http://blogs.telerik.com/KonstantinPetkov/Posts/07-08-20/ASP_NET_Web_Control_Performance_Test_in_Selenium.aspx?ReturnURL=%2fKonstantinPetkov%2fPosts.aspx) and he agreed that it wasnt a good idea.
I hope that I have expanded on my argument a bit better this time :)
opsssst
it looks it's me who misread your fist comment.
What you say makes a lot of sense :)
I guess most people assume that performance testing always means server performance, but I would like to do end-user performance testing.
Basically, I have a web-based application that will be used worldwide. I'm being asked to document how test scenarios will perform in 80-90 different locations -- each with unique network characteristics. From extrmely high latency to very constrained bandwidth. Some as poor as <160KBs and 800+ms.
So, what I want is a single test client that can execute test scenarios that range from 20-50 page navigations or submissions. I want the entire functional scenario to be scripted and I want to re-configure my lab network simulation to cover each of the locations under test.
In this case, can Selenium give me the per page test results and overall scenario response times I need? Are there better ways to do this kind of testing?