Tight Evaluation of Real-Time Task Schedulability for Processor’s DVS and Nonvolatile Memory Allocation

Autor: Sunhwa A. Nam, Kyungwoon Cho, Hyokyung Bahn
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Micromachines, Vol 10, Iss 6, p 371 (2019)
Druh dokumentu: article
ISSN: 2072-666X
DOI: 10.3390/mi10060371
Popis: A power-saving approach for real-time systems that combines processor voltage scaling and task placement in hybrid memory is presented. The proposed approach incorporates the task’s memory placement problem between the DRAM (dynamic random access memory) and NVRAM (nonvolatile random access memory) into the task model of the processor’s voltage scaling and adopts power-saving techniques for processor and memory selectively without violating the deadline constraints. Unlike previous work, our model tightly evaluates the worst-case execution time of a task, considering the time delay that may overlap between the processor and memory, thereby reducing the power consumption of real-time systems by 18–88%.
Databáze: Directory of Open Access Journals