Device Power Management for Real-Time Embedded Systems
Ref: HURRAY-TR-120603 Publication Date: 28 to 29, Jun, 2012
Device Power Management for Real-Time Embedded SystemsRef: HURRAY-TR-120603 Publication Date: 28 to 29, Jun, 2012
A large part of power dissipation in a system is generated by I/O devices. Increasingly these devices provide power saving mechanisms to inter alia enhance battery life. While I/O device scheduling has been studied in the past for realtime systems, the use of energy resources by these scheduling algorithms may be improved. These approaches are crafted considering a huge overhead of device transition. The technology enhancement has allowed the hardware vendors to reduce the device transition overhead and energy consumption. We propose an intra-task device scheduling algorithm for real time systems that allows to shut-down devices while ensuring the system schedulability. Our results show an energy gain of up to 90% in the best case when compared to the state-of-the-art.
Students Conference in Electrical and Computer Engineering (StudECE 2012).