Hello Nancy,

the test case template doesnt have much difference between them, but the mode of input values changes.

Under the Performence , 4 concepts should be covered mainly :

1) scalability Testing : To check whether your application allows customer expected load ( no. of users ) or not ?
2) Load Testing : Execute our application under pre-determined level of Resources and Continuous load is called Load testing.
3)Stress testing: -> Execution of our application under predetermined level of Resources and maximum Load is called stress testing.
During this test, testing team estimates Peak load of our application or product.
4)Volume testing : Execution of our application under huge amounts of resources to findout positive movements in performance is called Volume testing.

JUst check it out, how the inputs need to go for all these tests.