As we all know that software performance has become more and more important, while thousands of the users log in the system or visit the website simultaneously, the problem may occurred, the system crash or the server deny to provide the service to the user, so the performance testing need to be done before the software delivered to our customers.

　　We also benefit from the automation testing. There is always a lot of function testing or regression testing need us to finish in a short time. But we do not have enough time and sufficient human resource to complete it, how should we do? So the automation testing is the best solution. It cut down the costs, improve the work efficiency, save our time and energy. Its advantage is not merely as so.