Harold is developing software for the company he works for to aid in their human resources and payroll procedures. Harold is almost done working on the program, currently working in the testing…

Harold is developing software for the company he works for to aid in their human resources and payroll procedures. Harold is almost done working on the program, currently working in the testing phase. Since Harold's supervisors and the company executives are going to consider this a mission critical program, they want it to be tested to the fullest. Harold decides to test the program using higher than normal simulated loads and requests. What type of testing is Harold performing against his program?