By Topic

Energy-efficient fixed-priority scheduling for real-time systems based on threshold work-demand analysis

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Linwei Niu ; Department of Computer and Electrical Engineering and Computer Science, California State University Bakersfield, Bakersfield, CA, U.S.A. ; Wei Li

In this paper, we study the problem of reducing the energy consumption for hard real-time systems based on fixed-priority (FP) scheme. To balance the static and dynamic energy consumption, the concept of critical speed was proposed in previous research. Moreover, when combined with the processor shut-down strategy, the critical speed was widely used as the lower bound for voltage scaling in literature. In this paper, we show that this strategy might not always be more energy efficient than the traditional DVS strategy and there exits a tradeoff between these two strategies depending on the job work-demand to be finished within certain interval. To effectively address this issue, we propose a technique that combines these two strategies to achieve better energy saving performance. Our approach determines the energy efficient speeds for real-time jobs in their corresponding feasible intervals based on the threshold work - demand analysis. Our experimental results demonstrated that the proposed techniques significantly outperformed the previous research in overall energy saving performance.

Published in:

Hardware/Software Codesign and System Synthesis (CODES+ISSS), 2011 Proceedings of the 9th International Conference on

Date of Conference:

9-14 Oct. 2011