Filebench 是一款文件系统性能的自动化测试工具，它通过快速模拟真实应用服务器的负载来测试文件系统的性能。它不仅可以仿真文件系统微操作（如 copyfiles, createfiles, randomread, randomwrite ），而且可以仿真复杂的应用程序（如 varmail, fileserver, oltp, dss, webserver, webproxy ）。 Filebench 比较适合用来测试文件服务器性能，但同时也是一款负载自动生成工具，也可用于文件系统的性能。

• Multiple workload types support via loadable personalities
• Ships with more than 40 pre-defined personalities, including the one that describe mail, web, file, and database servers behaviour
• Easy to add new personalities using reach Workload Model Language (WML)
• Multi-process and multi-thread workload support
• Configurable directory hierarchies with depth, width, and file sizes set to given statistical distributions
• Support of asynchronous I/O and process synchronization primitives
• Integrated statistics for throughput, latency, and CPU cycle counts per system call
• Tested on Linux, FreeBSD, and Solaris platforms (should work for any POSIX-compliant Operating System)

项目主页：http://www.open-open.com/lib/view/home/1330417880030