A test that studies the behavior of the program when it is working at its limits. Types of load tests include volume tests, stress tests, and storage tests. Volume tests study the largest tasks the program can deal with. Stress tests study the program's response to peak bursts of activity. Storage tests study how memory and space is used by the program, either in resident memory or on disk. A test that is designed to put a server application under heavy user load to pinpoint performance and/or scalability problems.