Title: Low power fault tolerance scheduling scheme in DVS-enabled real-time systems

Authors: Yiwen Zhang; Huizhen Zhang

Addresses: College of Computer Science and Technology, Huaqiao University, Xiamen, 361021, China ' College of Computer Science and Technology, Huaqiao University, Xiamen, 361021, China

Abstract: This paper investigates the power management and fault tolerance in DVS-enabled real-time systems based on the EDF scheme. The power management is achieved via dynamic voltage scaling (DVS) and fault tolerance is achieved via checkpoint scheme. We estimate a critical speed which effectively decreases the energy consumption by the associated frequency dependent and independent devices. The proposed low power fault tolerance scheduling scheme includes two parts: 1) an offline solution to compute the optimal number of checkpoints and the running speed; 2) an online speed reduction mechanism based on the actual workload by using the slack time. The experimental results show that the proposed approach which is compared to the previous method (Melhem et al., 2004) significantly reduces the energy consumption.

Keywords: fault tolerance; dynamic voltage scaling; DVS; energy management; checkpoint; low power; scheduling; real-time systems; power management; critical speed; energy consumption; running speed; slack time.

DOI: 10.1504/IJHPSA.2016.078820

International Journal of High Performance Systems Architecture, 2016 Vol.6 No.2, pp.110 - 117

Received: 12 Apr 2016
Accepted: 06 Jul 2016

Published online: 02 Sep 2016 *

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