Stress / Load testing of Web application, which is better all Virtual user simultaneously or ramping them?

Question by Gha: Stress / Load testing of Web application, which is better all Virtual user simultaneously or ramping them?
I am using Mercury Loadrunner for Stress / Load testing of the web application, is it better to

Load all Vuser simultaneously
or
Ramp them Up

whats the difference between it?

Best answer:

Answer by junaid375
ramping is just like stacking users…in memory
i think you should load all Vuser simultaneously ,since your all doing stress testing

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