Utilizing Device Slack for Energy-Efficient I/O Device Scheduling in Hard Real-Time Systems with Non-preemptible Resources
Year: 2005
Type: article
Abstract: The challenge in conserving energy in embedded real-time systems is to reduce power consumption while preserving temporal correctness. Much research has focused on power conservation for the processor, while power conservation for I/O devices has received little attention. In this paper, we analyze the problem of online energy-aware I/O scheduling for hard real-time systems based on the preemptive periodic task model with non-preemptible shared resources. We extend the concept of de-vice slack proposed in [2] to support non-preemptible shared resources; and propose an online energy-aware I/O scheduling algorithm: Energy-efficient Device Scheduling with Non-preemptible Resources (EEDS NR). The EEDS NR algorithm uti-lizes device slack to perform device power state transitions to save energy, without jeopardizing temporal correctness. An evaluation of the approach shows that it yields significant energy savings. 1.
Source: Lincoln (University of Nebraska)
Authors: Cheng Hui, Steve Goddard
Language: English
Topic: Real-Time Systems Scheduling
Subfield: Hardware and Architecture
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W56261987