ddk@beta.lanl.gov (David D Kaas) (04/13/89)
I have heard about the Berkeley UNIX fast file system but why is it a 'fast' file system? Different block sizes, file allocation? Thank You ahead of time. -- Dave Kaas - D.O.E. Richland, Wa. e41126%rlvax3.xnet@lanl.gov
klee@daisy.UUCP (Ken Lee) (04/14/89)
Here's part of the abstract to "A Fast File System for UNIX" by McKusick, Joy, Leffler, and Fabry: A reimplementation of the UNIX file system is described. The reimplementation provides substantially higher throughput rates by using more flexible allocation policies that allow better locality of reference and that can be adapted to a wide range of peripheral and processor characteristics. The new file system clusters data that is sequentially accessed and provides two block sizes to allow fast access for large files while not wasting large amounts of space for small files. File access rates of up to ten times faster than the traditional UNIX file system are experienced. The paper is distributed in the BSD UNIX manuals. Since the "fast file system" is being adapted by AT&T System V UNIX, it may also be described in their manuals. -- Ken Lee Daisy Systems Corp., Interactive Graphics Tools Dept. Internet and Smail: klee@daisy.uucp uucp: uunet!daisy!klee