You are required to read and agree to the below before accessing a full-text version of an article in the IDE article repository.

The full-text document you are about to access is subject to national and international copyright laws. In most cases (but not necessarily all) the consequence is that personal use is allowed given that the copyright owner is duly acknowledged and respected. All other use (typically) require an explicit permission (often in writing) by the copyright owner.

For the reports in this repository we specifically note that

  • the use of articles under IEEE copyright is governed by the IEEE copyright policy (available at
  • the use of articles under ACM copyright is governed by the ACM copyright policy (available at
  • technical reports and other articles issued by Mälardalen University is free for personal use. For other use, the explicit consent of the authors is required
  • in other cases, please contact the copyright owner for detailed information

By accepting I agree to acknowledge and respect the rights of the copyright owner of the document I am about to access.

If you are in doubt, feel free to contact

IDT Open Seminar: Guaranteeing Real-time Properties using Energy Manipulation


Abhilash Thekkilakattil , Abhilash Thekkilakattil



Start time:

2012-03-15 14:15

End time:

2012-03-15 15:15



Contact person:


Traditionally energy management techniques, mainly Dynamic Voltage and Frequency Scaling (DVS), have focused on slowing down task executions and/or reduce the operating voltage to minimize energy consumption. However slowing down task executions and/or reducing the operating voltage could have detrimental effects on the real-time system. One of the effects of the traditional DVS techniques is the increase in the number of preemptions in the real-time schedule. Preemptions are known to increase the task Worst Case Execution Times (WCET) by 30-40% causing the task execution times to be unpredictable. Another effect of the traditional DVS techniques on the real-time system is the increase in fault rates decreasing the reliability of the system. We discuss the use of DVS to control the preemptions in the real-time schedule for periodic and sporadic task systems. We also have an open discussion on how DVS could be used to influence other properties of the real-time system in order to achieve a certain desired goal.

Abhilash Thekkilakattil,