IOZONE主要用来测试操作系统文件系统性能的测试工具,该工具所测试的范围主要有,write , Re-write, Read, Re-Read, Random Read, Random Write, Random Mix, Backwards Read, Record Rewrite, Strided Read, Fwrite, Frewrite, Fread, Freread, Mmap, Async I/O 使用iozone可以在多线程.多cpu,并指定cpu cache空间大小以及同步或