Energy-aware real-time scheduling in the linux kernel
| Autor: | Claudio Scordino, Juri Lelli, Luca Abeni |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Computer science
business.industry Linux Real-time scheduling DVFS Power-Aware Scheduling Real-Time Scheduling 020207 software engineering Linux kernel 02 engineering and technology 020202 computer hardware & architecture Scheduling (computing) Power-aware scheduling Embedded system 0202 electrical engineering electronic engineering information engineering Deadline scheduler Central processing unit Software Frequency scaling business Computer Science::Operating Systems Efficient energy use |
| Zdroj: | Proceedings of the 33rd Annual ACM Symposium on Applied Computing-SAC 18 Proceedings of the 33rd Annual ACM Symposium on Applied Computing -SAC '18 SAC Proceedings of the 33rd Annual ACM Symposium on Applied Computing |
| DOI: | 10.1145/3167132.3167198 |
| Popis: | The recent changes made in the Linux kernel aim at achieving better energy efficiency through a tighter integration between the CPU scheduler and the frequency-scaling subsystem. However, in the current implementation, the frequency scaling mechanism is used only when there are no real-time tasks in execution. This paper shows how the deadline scheduler and the cpufreq subsystem can be extended to relax this constraint and implement an energy-aware real-time scheduling algorithm. In particular, we describe the design issues encountered when implementing the GRUB-PA algorithm on a real operating system like Linux. A set of experimental results on a multi-core ARM platform validate the effectiveness of the proposed implementation. |
| Databáze: | OpenAIRE |
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