Abstract: This paper focuses on the key technology adopted in the data path of LionFS, which is an object-based cluster file system, including the direct data transmission mechanism and prefetch policy based on the access information of workload. Performance test results show that read performance increases by 70% with the data path pipelined by prefetch. Read/write performance increases by 24%/28% due to elimination of memory copy by direct data transmission.

Key words: cluster file system, data path, prefetch

摘要： 介绍基于对象存储的机群文件系统——LionFS所采用的关键技术，包括直接递送的数据传输机制以及基于前端负载访问信息的预取技术。性能测试表明，采用预取技术后数据通路可以“并发流水”，读带宽增长了70%，直接递送操作使读、写性能分别提高24%和28%。

关键词: 机群文件系统, 数据通路, 预取

CLC Number: 

• TP393