How to setup requests per second scenario on JMeter

Question

My test has 1 Authentication API and 2 other API's. I need to run Authentication API once and other 2 API's to generate X request per minute.The Auth API should run first then followed by other 2 API's. How can I create this scenario in thread group.

Answer 1

1. Put your "Authentication API" (whatever it is) under the Once Only Controller

2. Constant Throughput Timer is a good option but be aware of several constraints, i.e.

   • it is precise enough on "minute" level, the throughput will be applied more or less after 1st minute of your test, prior to that you need to manipulate the ramp-up period

   • it can only pause the JMeter Samplers execution rate to limit it to the defined number of requests per second, it won't kick off any extra threads in case if current amount is not enough to conduct the required load

   • If you want to get the number of requests per second you set in the "Target throughput" make sure that "Calculate Throughput based on" is set to all active threads

     

In the majority of cases it's easier to use Throughput Shaping Timer or Precise Throughput Timer