Journal of Engineering and Applied Sciences
ISSN: Online 1818-7803ISSN: Print 1816-949x
Abstract
Under heavy workload mobile real-time systems make full use of system resources to meet timing constraints of tasks. Under light workload they need to reduce energy consumption due to limited system resources and a limited power source. EDZL (Earliest Deadline until Zero Laxity), one of multiprocessor real-time scheduling algorithms can enable higher system utilization than EDF (Earliest Deadline First) and its scheduling overhead can be restricted. However, there is little work on reducing energy consumption in EDZL scheduling. This study proposes a DVFS (Dynamic Voltage/Frequency Scaling) technique in EDZL scheduling. The technique includes two algorithms: one that calculates a uniform speed on full-chip DVFS platforms and the other that calculates task’s individual speed on per-core DVFS platforms. We present simulation results that show our technique is simple but effective for reducing energy consumption in real-time scheduling.
How to cite this article:
Woojin Paik, Sangchul Han and Minkyu Park. Dynamic Voltage/Frequency Scaling for EDZL Scheduling in
Multicore Real-Time Systems.
DOI: https://doi.org/10.36478/jeasci.2019.8039.8046
URL: https://www.makhillpublications.co/view-article/1816-949x/jeasci.2019.8039.8046