多处理机上EDZL调度算法可调度性的比较研究

IF 2.5 4区综合性期刊 Q2 CHEMISTRY, MULTIDISCIPLINARY

Applied Sciences-Basel Pub Date : 2023-09-08 DOI:10.3390/app131810131

Sangchul Han, Woojin Paik, Myeong-Cheol Ko, Minkyu Park

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引用次数: 0

摘要

随着多处理器(或多核)实时系统的普及，对多处理器实时调度算法进行了大量的研究。本工作评估了EDZL(最早截止日期直到零松弛)，一种实时多处理器系统的调度算法。首先，我们比较了EDZL可调度性测试的性能。我们测量和比较每个测试所接受的任务集的比率。我们还研究了EDZL可调度性测试之间的优势性，发现基于需求的测试和基于利用率的测试的结合是一个有效的组合。其次，我们比较了EDZL和EDF(k)的可调度性。证明了EDZL可调度性测试的并集支配EDF(k)可调度性测试，即EDZL可调度性测试的并集可以容纳EDF(k)可调度性测试所允许的所有任务集。通过调度仿真，比较了EDZL和EDF(k)的可调度性，测量了成功调度任务集的比例。EDZL比EDF(k)多成功调度7.0%的任务集。

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A Comparative Study on the Schedulability of the EDZL Scheduling Algorithm on Multiprocessors

As multiprocessor (or multicore) real-time systems become popular, there has been much research on multiprocessor real-time scheduling algorithms. This work evaluates EDZL (Earliest Deadline until Zero Laxity), a scheduling algorithm for real-time multiprocessor systems. First, we compare the performance of EDZL schedulability tests. We measure and compare the ratio of task sets admitted by each test. We also investigate the dominance between EDZL schedulability tests and discover that the union of the demand-based test and the utilization-based test is an effective combination. Second, we compare the schedulability of EDZL and EDF(k). We prove that the union of the EDZL schedulability tests dominates the EDF(k) schedulability test, i.e., the union of the EDZL schedulability tests can admit all task sets admitted by the EDF(k) schedulability test. We also compare the schedulability of EDZL and EDF(k) through scheduling simulation by measuring the ratio of successfully scheduled task sets. EDZL can successfully schedule 7.0% more task sets than EDF(k).

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来源期刊

Applied Sciences-Basel CHEMISTRY, MULTIDISCIPLINARYMATERIALS SCIE-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.30

自引率

11.10%

发文量

10882

期刊介绍： Applied Sciences (ISSN 2076-3417) provides an advanced forum on all aspects of applied natural sciences. It publishes reviews, research papers and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation or experimental procedure, if unable to be published in a normal way, can be deposited as supplementary electronic material.