Change the thread count of test plan in JMeter, at run time
java, jmeter, load-testing
Solution
The short answer is: no, you cannot change the number of threads dynamically during runtime. Each thread count value is only read once when the test plan is first compiled and is not resolved again after this point, so it remains fixed.
Problem
I want to change the number of threads for a JMeter test plan at runtime. I have Googled my problem and found a proposed solution to use JMeter plugins. But in this solution I would have to schedule the thread group before running the test plan, which I don't want. I also found another potential solution which changes the property, but doesn't affect test plan behavior at run time. Ultimately, what I am trying to do is change the thread number given in a thread group and have it immediately increase or decrease the number of threads in the current running test plan. Is this possible?