多处理器上最优实时调度的动态电压和频率缩放

Kenji Funaoka, Akira Takeda, S. Kato, N. Yamasaki
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引用次数: 25

摘要

对于嵌入式系统来说,不仅系统性能重要,能源效率也至关重要。优化实时调度不仅能提高系统的可调度性,还能提高系统的能效。本文在前人提出的理论上最优的实时静态电压和频率缩放(RTSVFS)技术的基础上,提出了用于多处理器系统的实时动态电压和频率缩放(RT DVFS)技术。仿真结果表明,RT-DVFS克服了RT-SVFS的缺点,不受系统间差异的影响,但在系统利用率较高的情况下,RT-SVFS的能量消耗很大程度上取决于可选择的处理器频率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dynamic voltage and frequency scaling for optimal real-time scheduling on multiprocessors
Not only system performance but also energy efficiency is critically important for embedded systems. Optimal real-time scheduling is effective to not only schedulability improvement but also energy efficiency for the systems. In this paper, real-time dynamic voltage and frequency scaling (RT DVFS) techniques based on the theoretically optimal real-time static voltage and frequency scaling (RTSVFS) techniques proposed in our previous work are presented for multiprocessor systems. Simulation results show that RT-DVFS covers up the disadvantages of RT-SVFS in the sense that RTDVFS are not practically affected by the difference among systems, whereas the energy consumption of RT-SVFS highly depends on the selectable processor frequency especially in high system utilization.
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