The Center for Education and Research in Information Assurance and Security (CERIAS)

The Center for Education and Research in
Information Assurance and Security (CERIAS)
Center for Education and Research in Information Assurance and Security

The DEMCS File System

Author

M.L. Powell

Entry type

article

Abstract

This paper discussesthe design of the file system for DEMCS, an operating system being developed for the CRAY-1 somputer at Los Alamos Scientific Laboratory. The goals to be met, in particular the performance and usability considerations are outlined. A descriptionis given of the user interface and the general structure of the file systemand the file system routines. A simple model of program behavior is used to demonstrate the effet of buffer- ing data by the file system routines. A disk space allocation strategy is descibed which will take advantage of this buffering. The last section out- lines how the performance mechanisms are itegrated into the file system routines.

Date

1977 – November

Address

Los Alamos, NM 87545

Institution

Association for Computing Machinery

Journal

Proceedings of Sixth ACM Symposium on Operating

Key alpha

Powell

Pages

33-42

Publication Date

0000-00-00

Location

A hard-copy of this is in the Papers Cabinet

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