CODEWITHSUNDEEP
jmeter
murali koripally
murali koripally

Reputation: 113

Is it possible to wait all the threads to finish before starting next iteration in JMeter

I want to wait all the threads till each thread finishes its task in a thread group and start new iteration with all threads once again at same time.

i.e. for every iteration I want to make sure all the threads completed in last iteration.

Please provide your input for my requirement.

Upvotes: 0

Views: 4402

Answers (1)

Naveen Kumar R B
Naveen Kumar R B

Reputation: 6398

You can achieve it using Synchronizing Timer. Place it as a child of the last Sampler in the script, so all threads will wait for other threads to reach the last step.

Set Number of Simultaneous Users to Group by to 0, Timer will wait for the number of threads configured in current Thread Group.

Warning: This will result in sudden load (Spike) to the server as all threads starts the last step at the same time.

From JMeter Docs:

Note that timers are processed before each sampler in the scope in which they are found; if there are several timers in the same scope, all the timers will be processed before each sampler. Timers are only processed in conjunction with a sampler. A timer which is not in the same scope as a sampler will not be processed at all.

To apply a timer to a single sampler, add the timer as a child element of the sampler. The timer will be applied before the sampler is executed. To apply a timer after a sampler, either add it to the next sampler, or add it as the child of a Test Action Sampler.

So, try to keep Synchronizing Timer as a child of Test Action sampler Or Add a Debug Sampler and add Synchronizing Timer to it as a child, to avoid the unwanted spike as mentioned in Warning.

References:

  1. http://jmeter.apache.org/usermanual/component_reference.html#Synchronizing_Timer
  2. https://www.blazemeter.com/blog/using-jmeter-synchronizing-timer

Upvotes: 2

Related Questions