【摘要】：分層多級(jí)自適應(yīng)調(diào)度(AdHierSched)架構(gòu)是Linux操作系統(tǒng)中的虛擬實(shí)時(shí)架構(gòu),在系統(tǒng)運(yùn)行時(shí),它通過監(jiān)測各子系統(tǒng)對(duì)處理器資源的需求動(dòng)態(tài)調(diào)整資源分配。本文在分級(jí)調(diào)度架構(gòu)中提出了處理器資源預(yù)借機(jī)制(BBM),通過服務(wù)器間資源的動(dòng)態(tài)分配達(dá)到處理器資源在各個(gè)實(shí)時(shí)系統(tǒng)中優(yōu)化配置的目的,并針對(duì)AdHierSched架構(gòu)中資源預(yù)設(shè)值的預(yù)借性進(jìn)行設(shè)計(jì)和實(shí)現(xiàn),通過靜態(tài)任務(wù)和動(dòng)態(tài)任務(wù)對(duì)該資源預(yù)設(shè)值預(yù)借控制器進(jìn)行實(shí)驗(yàn)評(píng)估。實(shí)驗(yàn)結(jié)果表明:當(dāng)AdHierSched架構(gòu)伴隨著處理器預(yù)借機(jī)制和資源調(diào)整機(jī)制同時(shí)運(yùn)行時(shí),內(nèi)部運(yùn)行任務(wù)整體的截止期限超出率減小。此外,資源預(yù)借性機(jī)制的添加導(dǎo)致的系統(tǒng)額外開銷相比系統(tǒng)總的開銷很小,表明該方案適合在實(shí)際分級(jí)調(diào)度實(shí)時(shí)系統(tǒng)內(nèi)推廣使用。
[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.
【作者單位】： 華東理工大學(xué)化工過程先進(jìn)控制和優(yōu)化教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金青年基金(51407078)
【分類號(hào)】：TP316

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