Stressful Application Test (or stressapptest, its unix name) tries to maximize randomized traffic to memory from processor and I/O, with the intent of creating a realistic high load situation in order to test the existing hardware devices in a computer. It has been used at Google for some time and now it is available under the apache 2.0 license.

Some useful links:

• Introduction
• Installation Guide
• User Guide

To download the source code, go to the downloads page.