Jmeter run all thread groups after one thread group(token generation) exection

Question

I am (new to) doing API performance testing in Jmeter, and I have a Token Generation thread group that needs to be ran before all other thread groups(A,B,C). However I also want A B and C thread groups to be ran simultaneously. So how I want it to be executed is:

1. Token Generation
2. A & B & C

I am aware that checking the Run Thread Groups consecutively on Test Plan will allow me to run Token Generation first(as I placed it as the first thread group in the list), however it would executed is:

1. Token Generation
2. A
3. B
4. C

any help& hints are appreaciated. Thanks in advance!

Answer 1

There is a special thread group called setUp Thread Group, as per documentation:

A special type of ThreadGroup that can be utilized to perform Pre-Test Actions. The behavior of these threads is exactly like a normal Thread Group element. The difference is that these type of threads execute before the test proceeds to the executing of regular Thread Groups.

so replace your "Token Generation" Thread Group with the setUp Thread Group and this way the token will be generated before normal testing threads start.

More information: How to Use the SetUp Thread Group in JMeter