JMeter - Timer - "Poisson Random Timer"

As the name suggested, Poisson Random Timer is used to generate the random delay. This timer is based on the Poisson Distribution Function. The delay (think) time is the sum of the Poisson distributed value and the offset value.

How to add "Poisson Random Timer" element?
You can follow the below steps:

1. Select "Test Plan" or "Thread Group" or "Controller" or "Sampler" node where you want to add the timer

2. Right-click on the node
3. Mouse hovers "Add"
4. Mouse hovers "Timers"
5. Click "Poisson Random Timer"

How to remove "Poisson Random Timer" element?

You can follow the below steps:

1. Select "Poisson Random Timer" node
2. Right click on "Poisson Random Timer" node
3. Click "Remove" (Mouse) or "Delete" button from the keyboard

4. Click "Yes"    

What are the attributes of "Poisson Random Timer" element?
"Poisson Random Timer" has following attributes:

• Name: To provide the name of the timer
• Comments: To provide arbitrary comments (if any)
• Lambda (in milliseconds): The number shows how much the delay can deviate from the given offset towards higher and lower range. 
• Constant Delay Offset (in milliseconds): The number shows a constant delay which will be added to the random number generated by Poisson Function in the range of given deviation value.

Example: If Constant Delay Offset is given 1000 and Lambda is given 200 then Poisson Random Timer will generate the random number in the range of 800 to 1200 milliseconds:

Poisson Random Timer Delay = 1000 + PF*200   (where PF value could be from -1 to 1)

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Apache JMeter - "JSR223 Timer" Element

Related Topics:

• The Scope of Timers
• Gaussian Random Timer
• Uniform Random Timer
• Config Elements
• Apache JMeter