Jmeter: How to control a http sampler request in a thread group to run only once among 100 threads

Question

I've a thread group to run for 100+ users with-in that there is a need to execute a particular http request only once for all the threads. I know the "Once only Controller" but it execute the child samplers once per thread that is why it doesn't meet the requirement here:

As shown in the image: The "once only controller" run the request E & F only once for every thread where as I my requirement to run the sampler request E & F once only for all the threads A, B, C & D. having said that if i run the 100+ thread request E & F should run only 1 time.

Is there any way to achieve this in jmeter??

Problem ScreenShot:

Answer 1

Put your requests E and F under the If Controller and use the following condition:

${__BeanShell(ctx.getThreadNum() == 0 && vars.getIteration() == 1)}

Where:

• __Beanshell() - JMeter Function allowing execution of arbitrary Beanshell code
• ctx - shorthand for JMeterContext class instance
• vars - shorthand for JMeterVariables class instance