【摘要】：隨著人們對(duì)計(jì)算性能需求的不斷擴(kuò)展和技術(shù)的快速發(fā)展，多核的發(fā)展日趨成熟并且已經(jīng)開始在傳統(tǒng)PC甚至嵌入式領(lǐng)域廣泛應(yīng)用。然而，隨著芯片集成度的提高，功耗已經(jīng)和性能、時(shí)鐘頻率、芯片尺寸共同成為衡量處理器優(yōu)劣的主要標(biāo)準(zhǔn)，也成為了多核處理器性能發(fā)揮和提升的嚴(yán)重制約。因此針對(duì)多核系統(tǒng)的功耗管理技術(shù)的研究已經(jīng)成為近年來多核研究領(lǐng)域的熱點(diǎn)課題，也是當(dāng)前系統(tǒng)功耗管理研究的主要方向。 本文對(duì)操作系統(tǒng)功耗管理技術(shù)的研究重點(diǎn)之一——功耗管理框架進(jìn)行了分析和研究，并結(jié)合多核芯片和多核操作系統(tǒng)的特性提出了多核環(huán)境下動(dòng)態(tài)功耗管理框架的抽象模型以及在aCoral中的應(yīng)用實(shí)現(xiàn)。本文主要工作和成果如下： (1)對(duì)國內(nèi)外多核技術(shù)、多核操作系統(tǒng)和功耗管理技術(shù)的發(fā)展情況進(jìn)行了研究，分析了這幾個(gè)領(lǐng)域的發(fā)展趨勢(shì)和研究重點(diǎn)，引出了研究多核環(huán)境下功耗管理框架的重要性。 (2)對(duì)操作系統(tǒng)功耗管理的相關(guān)技術(shù)和規(guī)范進(jìn)行了介紹，主要包括DPM技術(shù)、DVFS技術(shù)以及APM和ACPI功耗管理規(guī)范。 (3)對(duì)當(dāng)前熱門的嵌入式操作系統(tǒng)Linux的功耗管理框架進(jìn)行了簡(jiǎn)單研究和分析，對(duì)各框架的優(yōu)缺點(diǎn)進(jìn)行了總結(jié)，為下一步研究工作提供參考。 (4)在前面研究的基礎(chǔ)上抽象出了操作系統(tǒng)功耗管理框架的必要模塊，提出了一個(gè)通用的功耗管理框架模型——GA-PMA，并且簡(jiǎn)單描述了該模型中各管理模塊間的交互關(guān)系。 (5)基于GA-PMA模型以及功耗管理相關(guān)技術(shù)和規(guī)范，結(jié)合多核芯片特性，提出了aCoral中功耗管理框架的設(shè)計(jì)方案，并實(shí)現(xiàn)了其中的核心子模塊。 本文提出的GA-PMA模型是一個(gè)高度抽象的通用模型，它體現(xiàn)了操作系統(tǒng)功耗管理框架的特點(diǎn)和設(shè)計(jì)要點(diǎn)，該框架模型不僅適用于單核系統(tǒng)，也適用于多核系統(tǒng)�；贕A-PMA模型所實(shí)現(xiàn)的aCoral功耗管理框架充分利用了多核處理器的功耗特性，，能夠在多核環(huán)境下對(duì)系統(tǒng)動(dòng)態(tài)功耗進(jìn)行有效管理，也能對(duì)DPM技術(shù)和DVFS技術(shù)提供支持，是一個(gè)較為完整的多核系統(tǒng)動(dòng)態(tài)功耗管理框架。
[Abstract]:With the continuous expansion of computing performance requirements and the rapid development of technology, the development of multi-core is becoming more and more mature and has been widely used in traditional PC and even embedded systems. However, with the improvement of chip integration, power consumption and performance, clock frequency and chip size have become the main criteria to measure the performance of multi-core processors, and also become a serious constraint to the performance of multi-core processors. Therefore, the research of power management technology for multi-core systems has become a hot topic in the field of multi-core research in recent years, and it is also the main research direction of power management of multi-core systems. This paper analyzes and studies the power management framework, which is one of the key technologies of operating system power management. Combined with the characteristics of multi-core chip and multi-core operating system, the abstract model of dynamic power management framework in multi-core environment and its application in aCoral are proposed. The main work and achievements of this paper are as follows: (1) the development of multi-core technology, multi-core operating system and power management technology at home and abroad are studied, and the development trend and research focus of these fields are analyzed. The importance of studying power management framework in multi-core environment is introduced. (2) the related technologies and specifications of operating system power management are introduced, including DPM technology, DVFS technology and APM and ACPI power management specification. (3) the power management framework of Linux, a popular embedded operating system, is simply studied and analyzed, and the advantages and disadvantages of each framework are summarized, which provides a reference for further research. (4) on the basis of the previous research, the necessary modules of the operating system power management framework are abstracted, and a general power management framework model, GA-PMA, is proposed, and the interaction between the management modules in the model is simply described. (5) based on the GA-PMA model and the related technologies and specifications of power management, combined with the characteristics of multi-core chips, the design scheme of power management framework in aCoral is proposed, and the core sub-modules are implemented. The GA-PMA model proposed in this paper is a highly abstract general model, which embodies the characteristics and design essentials of the operating system power management framework. The framework model is suitable not only for single-core systems but also for multi-core systems. The aCoral power management framework based on the GA-PMA model makes full use of the power consumption characteristics of multi-core processors, and can effectively manage the dynamic power consumption of the system in a multi-core environment, and can also support DPM and DVFS technologies. Is a relatively complete multi-core system dynamic power management framework.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TP332

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本文編號(hào)：2447066