Title

Adaptive Control Of Pre-Fetching

Keywords

Pre-fetching algorithm; RAID; Real-time processing

Abstract

Redundant arrays of independent disks (RAID) remain the mass storage medium of choice for real-time processing and information storage and retrieval. This paper proposes new adaptive pre-fetching algorithms for RAID systems using "life-time function analysis of programs". The life-time function approach allows us to derive an inequality which allows us to determine when pre-fetching can be effective. This inequality relates the changes in disk transfer times to the changes in inter-page fault times with the ratio of disk transfer time to page fault time. We then use this inequality to design and adaptive pre-fetching strategies, and to propose a practical implementation. Simulation experiments to evaluate the effectiveness of the proposed approach are carried out. The analytical approach based on a single process execution model is extended to a multiprogramming environment using a queuing network model, as well as to a simpler approach using a "parallel processing" approximation. © 2001 Elsvier Science B.V. All rights reserved.

Publication Date

10-1-2001

Publication Title

Performance Evaluation

Volume

46

Issue

2-3

Number of Pages

177-192

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/S0166-5316(01)00043-8

Socpus ID

0035480167 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0035480167

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