High-Performance File Systems

Delta文件系统是一个高性能的Unix文件系统 系统设计支持操作系统和数据库 使用线程日志的语义。 日志仅记录Meta 信息更改;文件块的处理方式与传统 Unix文件系统。 日志支持原子性的实现 在操作系统级别，同时提高性能 常见的文件系统操作，如创建和 删除文件。 线程日志支持非常精细的粒度 锁。 该研究包括建立一个新的高- 性能文件系统，并研究 在三个相关领域，性能，设备 独立性和容错性。 这需要设计和 实施新的文件系统算法，测量其 文件系统的性能和属性，并阐明 不同技术之间的权衡。

The Delta File System is a high-performance Unix file system design which supports both operating systems and database semantics using a threaded log. The log records only meta information changes; file blocks are handled as in traditional Unix file systems. The log enables implementation of atomicity at the operating system level while increasing the performance of common file system operations, such as the creation and deletion of files. A threaded log enables very fine granularity of locking. The research consists of constructing a new high- performance file system for Unix, and investigating the tradeoffs in three related areas, performance, device independence, and fault tolerance. This entails designing and implementing new file system algorithms, measuring their performance and the properties of file systems, and clarifying the tradeoffs between different techniques.