JMeter - Thread Group
About
The first step you want to do with every JMeter Test Plan is to add a Thread Group element.
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Definition
The Thread Group tells JMeter:
- the number of users (called threads) you want to simulate ,
- how often the users should send requests,
- and how many requests they should send.
Where:
- Number of threads define the number of Users.
- Ramp-up Period defines the time period where all user must be started. For instance, with 5 users and 5 second Ramp-Up Period, we get a delay of 1 second between the start of each user (5 users / 5 seconds = 1 user per second). A value to 0 means that JMeter will start immediately all users.
- Loop Count defines the number of times that the test plan must repeat.