0045 - JMeter - User load simulation using Ultimate Thread Group tutorial
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- Опубліковано 30 вер 2024
- JMeter - User load simulation using Ultimate Thread Group tutorial
▸In this video we cover the topic of using what is called an Ultimate Thread Group.
Ultimate Thread Group is a custom plugin that is part of the jmeter-plugins.org website and it gives you the ability to control how the threads are created, managed, and destroyed to generate the load based on the tests that have been setup in JMeter.
We go over the basics of the Ultimate Thread Group usage as well as moving the simple load test that we created in the prior video over to the new thread group.
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How i can achieve this scenario >> Load testing to simulate a lot of users on a website.
But not just testing how much load the server can handle, instead need to know how the whole setup behaves with a certain amount of users.
Thanks for the interesting question but the answer is not a very simple one.
For one, you would want to initiate the load/traffic from different locations and not just one computer as you want to ensure that the load generator is not causing unexpected usage pattern when its coming from a single source/computer. You would also want to randomize the tests from different load generator instances and do them in small batches on each generator. JMeter can probably be used for it but you can also look at tools such as Selenium and there are others that end up being paid.
Hi, thanks for the video 👏👌. Would this example be the most "natural" user behavior - or do you think you could optimize this?
Great question, it is somewhat natural behavior simulation from the point of view that it was a set of recorded actions that the user performed but the purpose was to simulate a progressive up and down load using the same activity which is not really "natural". You would want to randomize the ramp up and down and do it from different physical locations in order to have it be more realistic.
I Have one question? in jp@gc ultimate thread group we can able to run 2 scripts (or) not and in graph it will shows the difference?
What's the maximum number of user we can add in this?
Great question. The answer to this is it depends on the underlying infrastructure that you are executing the tests from.
If you have multiple test nodes or a very powerful server and if the test is not very complicated, you can probably generate hundreds of simultaneous calls but if your tests are very complex and require lots of parsing and processing then you will need to deploy some infrastructure to be able to generate a higher concurrent user load.
How did you calculated execution time as 1min 20 sec?
When you look at the graph, you can see the "Elapsed time" on the bottom that shows you the time to execute based on the configuration of threads that you add to the grid.
can i get real time example like any websittes for this?
How to run test in non-gui mode?
Try using a tool called Taurus that you can find on gettaurus.org website.
You can execute the JMeter tests using that tool and it also can show you the output/graphs in a CLI mode.
what if i want to use login and logout once and action multiple iterations ?
You can add more steps into the test between the login and logout but if you are looking to do a random set of those interactions, you might have to write something a bit more custom.
IF U WANT USE LOGIN AND LOGOUT ONCE ...U MUST USE "ONCE ONLY CONTROLLER"
great video, thnks
Glad it helped!
I set 15 as total threads to run but more than 50 threads getting recorded in the listeners. i don't know how this is happening. didn't set any loop anywhere.
Initially I set to run 100 threads, eventually something happened that it bumps up the amount of threads, I reduced to 1 and same thing. I updated from 5.2.1 to 5.3, both versions same result. Any idea, help?