Described Linux operating system and its file systems. By analysing the file system EXT2, the article put forward several relative points to optimize EXT2,so we could reach the purpose to advance the performance of high end servers.

• 叙述 Linux操作系统的发展并剖析了其文件系统 ,在对 EXT2文件系统分析的基础上 ,提出了优化文件系统的设计方案 ,以满足充分发挥 64位硬件平台的性能 ,达到提高高端服务性能的目的