Real-time and Energy Efficiency in Linux: Theory and Practice

被引：5
|
作者：
Scordino, Claudio [1 ]
Abeni, Luca [2 ]
Leili, Juri [3 ]
机构：
[1] Evidence Srl, Via Carducci 56, Pisa, Italy
[2] Scuola Super Sant Anna, Via Moruzzi 1, Pisa, Italy
[3] Red Hat Inc, 100 E Davie St, Raleigh, NC USA
来源：
APPLIED COMPUTING REVIEW | 2018年 / 18卷 / 04期
基金：
欧盟地平线“2020”;
关键词：
DVFS; Power-Aware Scheduling; Real-Time Scheduling; Linux;
D O I：
10.1145/3307624.3307627
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The recent changes made in the Linux kernel aimed at achieving better energy efficiency through a tighter integration between the CPU scheduler and the frequency-scaling subsystem. However, in the original implementation, the frequency scaling mechanism was used only when there were no real-time tasks in execution. This paper shows how the deadline scheduler and the cpufreq subsystem have been 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, which has been recently merged into the official Linux kernel.
引用
收藏
页码：18 / 30
页数：13
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