分级调度实时架构中处理器资源预设值的预借性

发布时间：2019-01-05 13:00

【摘要】：分层多级自适应调度(AdHierSched)架构是Linux操作系统中的虚拟实时架构,在系统运行时,它通过监测各子系统对处理器资源的需求动态调整资源分配。本文在分级调度架构中提出了处理器资源预借机制(BBM),通过服务器间资源的动态分配达到处理器资源在各个实时系统中优化配置的目的,并针对AdHierSched架构中资源预设值的预借性进行设计和实现,通过静态任务和动态任务对该资源预设值预借控制器进行实验评估。实验结果表明:当AdHierSched架构伴随着处理器预借机制和资源调整机制同时运行时,内部运行任务整体的截止期限超出率减小。此外,资源预借性机制的添加导致的系统额外开销相比系统总的开销很小,表明该方案适合在实际分级调度实时系统内推广使用。
[Abstract]:Hierarchical and multilevel adaptive scheduling (AdHierSched) architecture is a virtual real-time architecture in Linux operating system. When the system is running, it dynamically adjusts resource allocation by monitoring the requirements of each subsystem for processor resources. In this paper, a processor resource loan mechanism, (BBM), is proposed in the hierarchical scheduling architecture to optimize the allocation of processor resources in real-time systems through the dynamic allocation of resources between servers. The design and implementation of resource predefined loan in AdHierSched architecture are carried out, and the resource predefined loan controller is evaluated experimentally by static and dynamic tasks. The experimental results show that when the AdHierSched architecture is running simultaneously with the processor loan mechanism and the resource adjustment mechanism, the overall deadline overrun rate of the internal running task is reduced. In addition, the system overhead caused by the addition of resource lending mechanism is smaller than the total system overhead, which indicates that the proposed scheme is suitable for practical hierarchical scheduling real-time systems.
【作者单位】：华东理工大学化工过程先进控制和优化教育部重点实验室;
【基金】：国家自然科学基金青年基金(51407078)
【分类号】：TP316

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