非易失主存的系统软件研究进展  

Development of system software on non-volatile main memory

作　　者：舒继武[1] 陈游旻 胡庆达 陆游游[1] Jiwu SHU;Youmin CHEN;Qingda HU;Youyou LU(Department of Computer Science and Technology,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学计算机科学与技术系,北京100084

出　　处：《中国科学：信息科学》2021年第6期869-899,共31页Scientia Sinica(Informationis)

基　　金：国家重点研发计划(批准号:2018YFB1003301);国家自然科学基金重点项目(批准号:61832011);广东省科技创新战略专项项目(批准号:2018B010109002)资助。

摘　　要：互联网和物联网规模的迅速扩张促使全球数据存储总量呈现爆炸式的增长,导致数据系统从计算密集型向数据密集型方向发展.如何构建可靠高效的数据存储系统,成为大数据时代迫切需要解决的问题.相比传统磁盘,非易失主存具有性能高以及字节寻址等优点,这些独特的优势为高效存储系统的构建提供了新的机遇.然而,传统存储系统的构建方式不适用于非易失主存,无法发挥出非易失主存的性能优势,并且容易造成一致性开销高、空间利用率低、编程安全性低等问题.为此,本文分析了基于非易失主存构建存储系统面临的挑战,在系统软件层次分别综述了空间管理机制、新型编程模型、数据结构、文件系统和分布式存储系统等方面的研究进展,并展望了基于非易失主存构建存储系统的未来研究方向.The rapid development of the Internet has led to explosive growth in the total volume of global data storage,leading to the development of data systems from computing intensive to data intensive.How to build a reliable and efficient data storage system has become an urgent problem to be solved in the era of big data.Compared with traditional disks,non-volatile main memory has the advantages of high performance and byte-addressable characteristics,and these unique advantages provide new opportunities for the construction of efficient storage systems.However,the construction of a traditional storage system is not suitable for non-volatile main memory.It cannot give play to the performance advantage of non-volatile main memory,and it is easy to result in high consistency overhead,low space utilization ratio,and low programming security.Therefore,this paper analyzes the challenges for the storage system based on non-volatile main memory,and summarizes the research development of the spatial management mechanism,new programming model,data structure,file systems,and distributed storage systems.Finally,this paper lists the potential research direction of the storage system based on the non-volatile main memory.

关 键 词：非易失主存 系统软件 空间管理机制 编程模型 数据结构 文件系统 分布式系统 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]