分布式文件系统的写性能优化

摘要

BlueOceanis a large-scale distributed storage system based on object storage technology. This paper optimizes write performance from three aspects. Firstly, the paper increases the read and write block size of FUSE to reduce the number of writes from FUSE to client file buffer to improve write performance; Secondly, the thesis applies zero-copy of read and write in the client, to reduce the times of client-side data copy to improve write performance of the system; Thirdly, the paper parallelizes the process of write from application to client file buffer and the process of write from client to data server to improve the write performance.%BlueOcean是基于对象存储技术的大规模分布式存储系统,从3个方面对其写性能进行了优化.一是,增大了FUSE读写块的大小,减少FUSE写客户端文件缓冲区的次数,提高系统的写性能；二是,在客户端实现对读写数据的零拷贝,减少了客户端数据拷贝的次数,提高了系统的写性能；三是,将应用程序写客户端文件缓冲区的过程与客户端写数据服务器的过程并行化,以提高系统的写性能.