Controllers can change the order of requests coming from their child elements.
Controllers may have as child elements any of the following: Samplers (requests), Configuration Elements, and other Logic Controllers. ControllersĬontrollers let you modify the ordering and flow of a JMeter test script. At the end of each cycle, JMeter checks if the end-time has been reached, and if so, the run is stopped, otherwise the test is allowed to continue until the iteration limit is reached. When the test is started, JMeter will wait if necessary until the start-time has been reached. Click the checkbox at the bottom of the Thread Group panel to reveal two extra fields in which you can enter the start and end times of the run. Version 1.9 introduces a test run scheduler. If the number is set at one, then JMeter will execute the test only once before stopping. Alternatively, you can set the number of times the thread group will loop before ending. If there are 30 threads and a ramp-up period of 120 seconds, then each successive thread will be delayed by 4 seconds.īy default, a thread group is configured to loop indefinitely through its elements. Each thread will start 10 (100/10) seconds after the previous thread was begun. If 10 threads are used, and the ramp-up period is 100 seconds, then JMeter will take 100 seconds to get all 10 threads up and running.
#Apache jmeter wikipedia full#
The ramp-up period tells JMeter how long to take to "ramp-up" to the full number of threads chosen. Multiple threads are used to simulate concurrent connections to your server application. Set the number of times to execute the testĮach thread will execute the test plan in its entirety and completely independently of other test threads.The controls for a thread group allow you to: As the name implies, the thread group element controls the number of threads JMeter will use to execute your test. All elements of a test plan must be under a thread group. Thread group elements are the beginning points of any test plan. If you are not recording the data to file, this option makes no difference. This option should be off if you are doing stress-testing (it is off by default). The consequence is that the file will grow huge quickly, and JMeter's performance will suffer. This can be useful if you are doing a small run to ensure that JMeter is configured correctly, and that your server is returning the expected results. If you have selected a file in your test listeners, this data will be written to file. If selected, it will cause JMeter to record the data returned from the server for each sample. The Test Plan object has a new checkbox to select called "Functional Testing".
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