使JMeter与吞吐量调整计时器和并发线程组一起使用

Question

I am trying to shape a JMeter test involving a Concurrency Thread Group and a Throughput Shaping Timer as documented here and here . the timer is configured to run ten ramps and stages with RPS from 1 to 333. I want to set up the Concurrency Thread Group to use the schedule feedback function and added the formula in the Target concurrency field (I have updated the example from tst-name to the actual timer name). ramp-up time and steps I have set to 1 as I assume the properties are not that important if the throughput is managed by the timer; the Hold Target Rate time is 8000, which is longer than the steps added in the timer (6200).

When I run the test, it ends without any exceptions within 3 seconds or so. The log file shows a few rows about starting and ending threads but nothing alarming. The only thing I find suspicious is the Log entry "VirtualUserController: Test limit reached, thread is done plus thread name.

I am not getting enough clues from the documentation linked here to figure this out myself, do you have any hints?

Answer 1

According to the documentation rampup time and steps should be blank :

When using this approach, leave Concurrency Thread Group Ramp Up Time and Ramp-Up Steps Count fields blank"

So your assumption that setting them to 1 is OK, seems false...