多核处理器共享资源管理技术研究  

A Survey of Managing Contention for Shared Resources on Multicore Processors

作　　者：严杰俊[1] 黄皓[1] YAN Jie-jun,HUANG Hao （National Key Laboratory for Novel Software,Department of Computer Science and Technology,Nanjing University,Nanjing 210093,China）

机构地区：[1]软件新技术国家重点实验室南京大学计算机科学与技术系,江苏南京210093

出　　处：《电脑知识与技术》2011年第5期3159-3161,共3页Computer Knowledge and Technology

基　　金：江苏省高技术项目：可信操作系统新技术研发（编号：BE2008124）; 国家自然科学创新群体项目（60721002）资助

摘　　要：现代多核处理器结构的设计使得集成在同一块芯片上的多个执行核共享各种硬件资源,如片上最后一级Cache、内存控制器、前端总线以及硬件预取单元等,而多线程的并行执行导致核与核之间共享资源的争用,造成系统整体性能的下降,如何有效地解决多核共享资源冲突来提升系统的整体性能以及应用程序的服务质量成为当今研究的热点。文章首先概要介绍当前主流的多核处理器,然后提出了多核体系结构下共享资源管理面临的挑战,接着分析了降低共享资源争用的策略方法：操作系统调度技术、资源划分技术,最后给出了多核处理器共享资源管理技术可能的发展方向。Modern multi-core processors are designed with multiple cores integrated on a chip,one common feature of these multi-core chips is resources sharing among sibling cores that sit on the same chip,such as the last level Cache,memory controller,front-side bus and prefetching hardware.The parallel execution of multiple threads leading to the contention of shared resources,causing a degradation of the system performance.Therefore,How to solve the contention for shared resources effectively and improve overall system performance and quality of service becomes an active research area.In this paper,we introduce the mainstream multi-core processors and the challenge of managing contention for shared resources firstly,and then we analyzed the key technologies of shared resources management： operating system scheduling and shared resource partitioning;at last,we make the conclusion of our paper and discuss the future of shared resources management technologies.

关 键 词：多核 共享资源争用 线程调度 资源划分 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论;自动化与计算机技术—计算机科学与技术]