复内核操作系统文件系统的设计与实现.PDF

Computer Engineering and Applications 计算机工程与应用 2016 ，52（7 ） 43 复内核操作系统文件系统的设计与实现 1，2 1 2 王国伟 ，王彩芬 ，朱俊杰 1，2 1 2 WANG Guowei , WANG Caifen , ZHU Junjie 1.西北师范大学 计算机科学与工程学院，兰州 730070 2.中国科学院计算技术研究所 先进计算机系统研究中心，北京 100080 1.College of Computer Science Engineering, Northwest Normal University, Lanzhou 730070, China 2.Research Center of Advanced Computer Systems, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080, China WANG Guowei, WANG Caifen, ZHU Junjie. Design and implementation of file system on multi-kernel operating system. Computer Engineering and Applications, 2016, 52 （7 ）：43-49. Abstract ：With the increased resource density especially the many-core architecture in a single server, the scalability of an Operating System （OS ）and low resource utilizations become serious problems. Operating system researchers have made many efforts in solving these problems by running multiple kernels within a server, including a replicated kernel OS, Popcorn Linux. But for cloud and big data applications, the file system plays an important role in data storage, which is not implemented in Popcorn Linux. It is because file systems in the traditional single-kernel operating system cannot be directly ported to a replicated kernel OS. A new file system is designed for Popcorn Linux. This paper proposes a method of realizing a user space file system, POPFUSE, based on the FUSE （Filesystem in User Space ）framework, which allows all kernels to access their respective file systems without needing directly attached disk controllers. The stability of the communication is guaranteed by the way of sharing memory, and that also improves the efficiency of the file system. The paper conducts extensive evaluations on the performance of POPFUSE. The experimental re