JMeter comprises various different elements which co-relates with each other but designed for different purposes. A test plan must have atleast one thread group. A JMeter elements can be nested in one another.

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Following are some elements/components that JMeter has :

• Thread Group

• Controllers(Logic Controllers & Samplers)

• Listeners

• Configuration Elements

• Assertions

• Timers

• Pre Processor Elements

• Post Processor Elements

• Test Fragment

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Below the flow diagram is represented to understand each component and their relation to specific modules in JMeter :

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Refer next page JMeter Thread Group