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

页码：18 / 30

页数：13

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