DVFS Virtualization for Energy Minimization of Mixed-Criticality Dual-OS Platforms

A dual-OS platform can efficiently implement emerging mixed-criticality systems by consolidating a real-time OS (RTOS) and a general-purpose OS (GPOS). Although the dual-OS platform attracts increasing attention, it often suffers from energy inefficiency in the GPOS for guaranteeing real-time respon...

Full description

Saved in:
Bibliographic Details
Published in2022 IEEE 28th International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA) pp. 128 - 137
Main Authors Komori, Takumi, Masuda, Yutaka, Ishihara, Tohru
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.01.2022
Subjects
Dynamic voltage scaling
Embedded software
Energy consumption
Hardware
Mixed-criticality
Multicore processing
Real-time systems
Software
Switches
Virtual machine monitors
Voltage
Online AccessGet full text

Cover

More Information
Summary:A dual-OS platform can efficiently implement emerging mixed-criticality systems by consolidating a real-time OS (RTOS) and a general-purpose OS (GPOS). Although the dual-OS platform attracts increasing attention, it often suffers from energy inefficiency in the GPOS for guaranteeing real-time responses of the RTOS. This paper proposes an energy minimization method called DVFS virtualization, which allows running multiple DVFS policies dedicated to the RTOS and GPOS, respectively. The experimental evaluation using a commercial processor showed that the proposed hardware could change the supply voltage within 500 ns and reduce the energy consumption of typical applications by 60 % in the best case compared to conventional dual-OS platforms.
ISSN:2325-1301
DOI:10.1109/RTCSA55878.2022.00020