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