Abstract: This paper designs and carries out some experiments on access mode, multiple I/O channel, and system aging problem, etc. It makes use of many kinds of benchmarks to evaluate the performance of the EXT3 and the XFS file system to find how much those factors affect the file system performance. In the experiments, it develops the Thput benchmark which measures metadata performance of the file system and the FastAging tool which can make a file system old very fast. From the conclusion of the experiments, it can choose the most optimal file system according to the application characterization and the hardware configurations to let users get maximum I/O performance.

Key words: File system, Performance evaluation, Aging

摘要： 影响文件系统的因素有很多，该文从不同访问模式、多通道硬件配置、文件系统老化等方面设计试验，利用多种性能评测工具，对EXT3、XFS两种本地文件系统进行试验，分析这些因素对本地文件系统性能的影响以及作为NFS服务器端的文件系统时，对NFS性能的影响。在试验过程中，编写了测试文件系统元数据性能的Thput benchmark以及使文件系统能够快速老化的工具FastAging。通过分析试验结果总结出针对应用中不同的访问模式配置最优的文件系统的解决方案，使用户能够获得最大的I/O性能。

关键词: 文件系统, 性能评价, 老化