Q. 3 : When load and performance Testing are done?

 

Load testing is performed after the completion of interface (GUI) testing.

Single user testing focuses on functionality and user interface of a system component, while application testing focuses on performance and reliability of an entire system.

For example, a typical application-testing scenario might depict 1000 users logging in simultaneously to a system. This gives rise to issues such as what is the response time of the system, does it crash, will it go with different software applications and platforms, can it hold so many hundreds and thousands of users, etc.