intrusive testing

from The Free On-line Dictionary of Computing (8 July 2008)

Intrusive Testing

   <testing> Testing that collects timing and processing
   information during program execution that may change the
   behaviour of the software from its behavior in a real
   environment.  Intrusive testing usually involves additional
   code embedded in the software being tested or additional
   processes running concurrently with software being tested on
   the same processor.

   (1996-12-01)