How can I specify a specific rate to my test?

Question

I have a test plan with the following structure:

SimpleController  
      HTTP-Sampler-1  
      HTTP-Sampler-2  
      HTTP-Sampler-3  
      HTTP-Sampler-4  
      HTTP-Sampler-5  
      HTTP-Sampler-6  
      HTTP-Sampler-7

This SimpleController captures a "flow". Meaning that the samplers-1 through 7 is a "unit" meaning that after the HTTP-Sampler-7 sends its request there will be a specific result in the server back-end.

I am interested in sending 30000 "requests" in total to the server. When I say "request" I mean all samplers under the controller.
But I want to start each request in every X seconds.

I mean that a thread should send HTTP-Sampler-1 every X seconds.

Taking into account that the recommendation is to use ~300 threads what is the configuration I should use to accomplish my test?

@AndreyBotalov:I will accept it as soon as I test this.+1 for the moment. — Cratylus, Dec 08 '12 at 09:54

Andrei Botalov · Answer 1 · 2012-12-03T17:46:33.150

1

If those requests are the only one you want to execute, you can use Constant Throughput Timer.

Constant througput timer wants you to give it target throughput in samples per minute. As you have 7 requests per X seconds, you can set it to 7*60/X. Also set Calculate Throughput based on to "this thread only"

Your test plan will be the same, only timer will be added to it.

If you also want to send other requests in this thread, I think you should use Beanshell or BSF.

edited Dec 03 '12 at 17:46

answered Dec 02 '12 at 20:04

Andrei Botalov

20,686
11
89
123

But I don't want to send 7 requests/X seconds.I want to make sure that an `HTTP-Sampler-1` request is being send per X seconds – Cratylus Dec 02 '12 at 20:32
@Cratylus You will get it if you'll put timer after sampler 7 – Andrei Botalov Dec 02 '12 at 23:51
Put the timer with `7*60/X` you mean? – Cratylus Dec 03 '12 at 17:42
But how can I verify that the configuration meets the expectations? – Cratylus Dec 05 '12 at 17:36
@Cratylus what do you mean? – Andrei Botalov Dec 05 '12 at 17:39
In this case you will get 7 requests per X seconds to be sent. If those 7 requests are the only one, you'll get what you want – Andrei Botalov Dec 05 '12 at 17:44
So isn't there some reporting that shows the exact time to compare? – Cratylus Dec 05 '12 at 17:46
@Cratylus check e.g. [Transaction per Seconds](http://code.google.com/p/jmeter-plugins/wiki/TransactionsPerSecond) or other listners from Jmeter plugins – Andrei Botalov Dec 05 '12 at 17:50

How can I specify a specific rate to my test?

1 Answers1