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Understanding JMeter Element- Once Only Controller

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by , 06-21-2015 at 02:30 AM (544 Views)
Understanding JMeter Element- Once Only Controller

The Once Only Logic Controller tells JMeter to process the controller(s) inside it only once per Thread, and pass over any requests under it during further iterations through the test plan.

The Once Only Controller will now execute always during the first iteration of any looping parent controller. Thus, if the Once Only Controller is placed under a Loop Controller specified to loop 5 times, then the Once Only Controller will execute only on the first iteration through the Loop Controller (ie, every 5 times). Note this means the Once Only Controller will still behave as previously expected if put under a Thread Group (runs only once per test per Thread), but now the user has more flexibility in the use of the Once Only Controller.

For testing that requires a login, consider placing the login request in this controller since each thread only needs to login once to establish a session.

Parameters

Name- Descriptive name for this controller that is shown in the tree.
Once Only Example
The behaviour of the Once Only controller under anything other than the Thread Group or a Loop Controller is not currently defined. Odd things may happen.




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The article may contain references, extract or content from other informative sources.
Researched/Authored/Compiled by -
Ronak Shah
Practice Head - Software Testing (QA), CIGNEX Datamatics

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