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ABSTRACT

Center for Information Technology Integration University of Michigan
519 West William Street
Ann Arbor, MI 48103-4943

CITI Technical Report 92-3

Faster AFS

Michael T. Stolarchuk
mts@citi.umich.edu

The AFS Cache Manager fetches files from the AFS file server, and caches them into a local file system. Given this model, users expect reads of locally cached files to perform at local file system rates. However, read performance of the AFS cached files is half the read performance of the local file system. This paper discusses the reasons for the large performance difference, and the modifications made to AFS so that reads of locally cached files perform within 10% of the performance of the local file system.

June 22, 1992