International Journal of Information Technology and Computer Science (IJITCS)
IJITCS Vol. 7, No. 10, 8 Sep. 2015
Cover page and Table of Contents: PDF (size: 558KB)
Real Time Scheduling for CPU and Hard Disk Requirements-Based Periodic Task with the Aim of Minimizing Energy Consumption
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Author(s)
Index Terms
Energy consumption, periodic real time task, execution time, Read/Write time, Revolutions Per Minute, frequency
Abstract
In recent years, with an increasing number of requests, energy, power and temperature have been important keys in embedded systems, which decrease the lifetime of both CPUs and hard disks. The energy consumption is an important issue in computer systems, particularly real-time embedded systems. The frequency and the Revolutions Per Minute are major factors in the reduction of energy consumption in both processors and hard disk drives. Therefore, the main goal of this paper is to present a scheduling mechanism for a real time periodic task that can save more energy. This mechanism is based on increasing, as much as possible, the execution time of the CPU and/or the Read/Write time of the hard disk without passing the task deadline. This will be done by dynamically changing the CPU frequency and/or the RPM of hard disk. Our experimental results demonstrate that the proposed algorithm manages to lower energy consumption by an average of 25% and to reduce the number of missed tasks by 80%.
Cite This Paper
Vahdaneh Kiani, Zeynab Mohseni, Amir Masoud Rahmani, "Real Time Scheduling for CPU and Hard Disk Requirements-Based Periodic Task with the Aim of Minimizing Energy Consumption", International Journal of Information Technology and Computer Science(IJITCS), vol.7, no.10, pp.54-60, 2015. DOI:10.5815/ijitcs.2015.10.07
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