TOPS: Two-phase scheduling for distributed real-time systems

Mohammed I. Alghamdi, Xunfei Jiang, X. Qin, Jifu Zhang, Minghua Jiang, Meikang Qiu
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引用次数: 1

Abstract

In this work we propose a two-phase scheduling technique (TOPS) for distributed real-time systems. The first phase of TOPS is in charge of producing a scheduling sequence, whereas the second phase aims to dispatch tasks to computing nodes of a distributed system. The two phases are independent of one another and; therefore, one can change a policy in one phase without configuring another phase. TOPS makes it possible to observe the impacts of sorting policies on the performance of scheduling policies. We implement a TOPS prototype, in which the first phase is comprised of three sorting policies and the second phase consists of two scheduling policies in the second phase. TOPS enables us to discover that combining the EDF (Earliest-Deadline-First) and AEAP (As-Early-As-Possible) policies leads to an optimized performance among all the six candidate algorithms.
分布式实时系统的两阶段调度
本文提出一种分布式实时系统的两阶段调度技术(TOPS)。TOPS的第一阶段负责生成调度序列,而第二阶段的目标是将任务分配给分布式系统的计算节点。这两个阶段是相互独立的;因此,可以在一个阶段更改策略,而无需配置另一个阶段。使用TOPS可以观察排序策略对调度策略性能的影响。我们实现了一个TOPS原型,其中第一阶段由三个排序策略组成,第二阶段由第二阶段的两个调度策略组成。TOPS使我们发现结合EDF (early - deadline - first)和AEAP (As-Early-As-Possible)策略可以在所有六种候选算法中获得最佳性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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