Usage

" To determine whether the system achieves the desired level of proficiency in the production status.

" Used to verify -

Response time

Turn around time

Design performance.

" Test execution can be done using the simulated system and actual system.

" The system either can be tested as a whole or in parts.

Objectives " To determine whether the system can meet the specific performance criteria

" Verify whether system make optimum use of hardware and software.

" Determining response time to online use requests

" Determining transaction processing turnaround time.

How to Use

" Can be performed in any phase of SDLC

" Used to evaluate single aspect of system

" Executed in following manner -

Using h/w and s/w monitor

Simulation of functioning using simulation model

Creating quick or dirty programs to evaluate approximate performance of completed system.

When to use " Should be used early in SDLC

" Should be performed when it is known that the results can be used to make changes to the system structure.

Examples " Transaction turnaround time adequacy

" Optimum use of h/w and s/w.