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2005
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Feedback-Based Dynamic Voltage and Frequency Scaling for Memory-Bound Real-Time Applications

9 years 7 months ago
Feedback-Based Dynamic Voltage and Frequency Scaling for Memory-Bound Real-Time Applications
Dynamic voltage and frequency scaling is increasingly being used to reduce the energy requirements of embedded and real-time applications by exploiting idle CPU resources, while still maintaining all application’s real-time characteristics. Accurate predictions of task run-times are key to computing the frequencies and voltages that ensure that all tasks’ real-time constraints are met. Past work has used feedback-based approaches, where applications’ past CPU utilizations are used to predict future CPU requirements. Mis-predictions in these approaches can lead to missed deadlines, suboptimal energy savings, or large overheads due to frequent changes to the chosen frequency or voltage. One shortcoming of previous approaches is that they ignore other ‘indicators’ of future CPU requirements, such as the frequency of I/O operations, memory accesses, or interrupts. This paper addresses the energy consumptions of memory-bound real-time applications via a feedback loop approach, ba...
Christian Poellabauer, Leo Singleton, Karsten Schw
Added 25 Jun 2010
Updated 25 Jun 2010
Type Conference
Year 2005
Where RTAS
Authors Christian Poellabauer, Leo Singleton, Karsten Schwan
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