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Threadgroup In Jmeter

What Is Thread Group?

How To Add Thread Group In Jmeter?

1. Open jMeter
2. Right-click on the test plan and click on Add → Threads (Users) → Thread Group

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Different Elements Of Thread Group

1. Right-click on Thread Group.
2. Click on Add → Component name

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1. Sampler - This is a request that will be processed by jMeter.
2. Logic Controller - This element controls the action of the request. In other words, it controls the way the request is sent to server.
3. Pre processor - This element is used to perform activity before the request is processed.
4. Post Processor - If you require any information from the response then this element is used.
5. Assertions - If we want to validate the response with the desired output then assertions are used.
6. Timer - This element is used to add delay in your request.
7. Test fragments - Test fragments is like another thread group which can be added inside the test plan.
8. Config Elements - This element is used to create defaults and variables used by samplers.
9. Listener - This element is used to view and analyze the results of performance testing in tabular or graphical form.

Thread Group Properties

1. Name – This is the name of the thread group.
2. Comments – These are additional information that user can add about thread group
3. Action to be taken after a sampler error – This section specifies what action needs to be performed if an error occurs.
   1. Continue – ignore the error and continue with the execution.
   2. Start next thread loop – ignore the error and continue the next iteration.
   3. Stop thread – stop the execution of current thread.
   4. Stop test – stop the entire execution of test.
   5. Stop test now – Test execution must be stopped abruptly.
4. Number of Threads (users) – These are number of concurrent user sending requests.
5. Ramp-Up Period (in seconds) – It means how much time jmeter will take to start full number of threads. For example if number of threads are 30 and Ramp-Up period is 180 seconds then it means after every 6 seconds (180/30) a new thread will be added.
6. Loop count – This attribute specifies the number of iterations.
7. Delay thread creation until needed – This option when checks performs ramp-up and startup delays before thread data is created.
8. Scheduler – Provides option to execute your script for specific amount of time.