How to cope with the negative impact of a processor’s energy-saving features on real-time capabilities? Carsten Emde Open Source Automation Development Lab (OSADL) eG Aichhalder Str. 39, 78713 Schramberg, Germany C.Emde@osadl.org Abstract In the early days of using computers for determinism-critical tasks, processors mostly were suitable for this purpose, since instruction execution was in sync wi