Question

I work with SoapUI project and I have one question. In following example I’ve got 505 requests in 5 seconds with thread count =5. I would like to understand how count has been calculated in this example.

For example, if I want 1000 request in 1 minute what setting should I set in variance strategy?

Regards, Evgeniy

Answer 1

variance strategy as the name implies, it varies the number of threads overtime.Within the specified interval the threads will increase and decrease as per the variance value, thus simulating a realistic real time load on target web-service.

How variance is calculated : its not calculated using the mathematical variance formula. its just a multiplication. (if threads = 10 and variance = 0.5 then 10 * 0.5 = 5. The threads will be incremented and decremented by 5)

For example:

Threads = 20
variance = 0.8
Strategy = variance
interval = 60
limit = 60 seconds

the above will vary the thread by 16 (because 20 * 0.8 = 16), that is the thread count will increase to 36 and decrease to 4 and end with the original 20 within the 60 seconds.

if your requirement is to start with 500 threads and hit 1000 set your variance to 2 and so on.

refrence link:

chek the third bullet – simulating different type of load – soapUI site

Book for reference:

Web Service Testing with SoapUi by Charitha kankanamge