CODEWITHSUNDEEP
jmeterjmeter-3.2
Basil Musa
Basil Musa

Reputation: 8718

Whats the difference in JMeter thread group between 50 threads 5 second ramp up and ...?

Whats the difference in JMeter between:

(a) 50 threads 5 second ramp up and 1 loop count

(b) 10 threads 1 second ramp up and 5 loop count

For me (a) and (b) seem to be the same thing, 10 threads will be instantiated every second for a total of 5 seconds.

Am I missing something here?

Upvotes: 0

Views: 50

Answers (1)

Ori Marko
Ori Marko

Reputation: 58774

ramp-up period doesn't effect total number of threads. see user manual:

The ramp-up period tells JMeter how long to take to "ramp-up" to the full number of threads chosen

So both scenarios will be executed 50 times, the difference is the order of the threads. In your case let's assume each thread takes ~5 minutes

Scenario a (without encountering any bottleneck) will take ~5 minutes (+5 seconds ramp up)

While Scenario b will take approximately 5 times more because each loop will start after threads ends. 5 minutes will take for each loop - ~25 minutes (+1 second ramp up)

Also you can have limitation on your server that doesn't allow 50 threads executing in 5 seconds same operation so Scenario a will be impossible to execute.

Upvotes: 2

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