Energy-Aware Scheduling for Real-Time Unicore Mixed-Criticality Systems
Subject Areas : electrical and computer engineeringS. H. Sadeghzadeh 1 , yasser sedaghat 2
1 - Ferdosi University
2 - Ferdosi University
Keywords: DVFSenergy-aware schedulingmixed-criticalityreal-time systemspower consumption,
Abstract :
Integrated modular avionics (IMA) has significantly evolved avionic industry. In this architecture, tasks with different criticality have been integrated into a share hardware in order to reduce the size, weight, power consumption and cost so they commonly use the resources. The industry’s interest in integrating tasks has resulted in introducing mixed-criticality systems. Real time and assurance of executing critical tasks are considered of the two basic needs for these kinds of systems. However, integration of critical and non-critical tasks makes some problems for scheduling executing tasks. On the other hand, reducing energy consumption is another important need as these devices run by batteries. Therefore, the present study aims at satisfying the above mentions needs (real time scheduling and reducing energy consumption) by introducing an innovative energy- aware scheduling approach. The proposed algorithm guarantees executing critical tasks as well as reducing energy consumption by dynamic voltage and frequency scaling (DVFS). The results of simulation showed that energy consumption of the proposed algorithm improved up to 14% in comparison with the similar approaches.
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