Is it possible to run JMeter samplers concurrently?

Question

So to explain my situation:

I have a JMeter test plan that runs some test groups constantly in a loop. In addition to this I need to have multiple sampler requests go through together each minute (to simulate spiked usages). I can't set a constant timer to delay each of these because some may finish up quicker than others and they won't be in sync.

Is there a way to make multiple test groups send a request every minute the test is running?

OR

Is there a way to put all these samplers in 1 thread group and make them all run concurrently?

Answer 1

As far as I'm able to understand your use case, you need 2 Thread Groups.

1. First Thread Group which is SOAP Sampler A
2. Second Thread Group which is SOAP Sampler B

Then you need to set different variables for both thread groups to make them behave according to your use case and implement spikes you need.

Important: make sure that "Run Thread Groups consecutively" under your test plan is UNCHECKED elsewise you'll be having SOAP Sampler B running after SOAP Sampler A, not in the same time.

Answer 2

Lets consider your scenario is,

5 Users hitting 5 URLs(samplers) simultaneously.

So what you need to do is, in your Test Plan, add 5 Thread Groups. In each Thread Group configure the number of Threads to 5 and Ramp Up to 0.

Now, add one HTTP Request sampler in each Thread Group. Configure each sampler according to the URL you want to test.

Add Listener(s) to your Test Plan. Save the Test Plan and Run your test.

Make sure you haven't selected the "Run Thread Groups consecutively" in the Test Plan.