torture testing
stress testing

CPU stress testing is also referred to as torture testing.

This kind of torture testing may seem academic, but I'm trying to get a feel for how well HFS+ fares in its new role.

Today's mature systems work as well as they do only because they are exposed to nonstop, high-stakes torture testing.

Software that is suitable for torture testing should typically run instructions that utilise the entire chip rather than only a few of its units.

Stress testing (sometimes called torture testing) is a form of deliberately intense or thorough testing used to determine the stability of a given system or entity.

ALT Testing is sometimes also referred to as "Accelerated Life Torture testing" because "ALT testing" means "Accelerated Life Test testing".