Accession Number:

ADA170748

Title:

Short-Term File Reference Patterns in a UNIX Environment,

Descriptive Note:

Corporate Author:

ROCHESTER UNIV NY DEPT OF COMPUTER SCIENCE

Personal Author(s):

Report Date:

1986-03-01

Pagination or Media Count:

81.0

Abstract:

Data on short-term user file reference patterns have been collected from a local UNIX system supporting university research. These data provide detailed information of file opens a directory accesses. Somewhat coarser information on internal file operations has also been collected. An analysis of the data shows that referenced files in our environment are generally smallunder 1000 bytes, usually completely read or written, and have short interopen intervalsa succeeding open to a file usually occurs within 60 seconds of the last open. In addition, while there is extensive sharing of some files, this sharing is restricted to standard system files. We see very little sharing of user files. This paper emphasizes the implications the patterns we observe have for distributed file systems. However the results may also be applied to the design and modeling of more traditional file systems. Author

Subject Categories:

  • Computer Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE