EDFUSE:一个基于异步事件驱动的FUSE用户级文件系统框架

开源FUSE文件系统用户模块实现方式采用多线程并发模型，在高并发条件下，线程间的同步将降低系统的吞吐率，增加响应时间。基于流水线分段数据通信思想和异步事件网络驱动模型，消除线程间的同步，通过优化文件和元数据缓存来提高缓存命中率等方式，实现了异步事件驱动的FUSE用户级文件系统的用户态框架。实验结果表明，在大量请求环境下系统的吞吐率得到提高。

EDFUSE : FUSE Framework Based on Asynchronous Event-driven

FUSE is a classical framework of developing filesystem in userspace conveniently, it is composed of kernel module and userspace module. However, userspace module is developed in multithreading context; the number of threads is in proportion to the number of requests, this means that it is explosive growth when plenty of requests arc reached, it is harmful for system performance and responsive time. A novel asynchronous event-driven FUSE(EDFUSE) framework using pipeline is proposed to optimize the cache of data and metadata to increase the hit ratio of cache. Finally, the experiment studies show that the EDFUSE framework gains better throughput and efficiency.