NDLI: A simple characterization of provably efficient prefetching algorithms

Content Provider	IEEE Xplore Digital Library
Author	Wei Jin Barve, R.D. Trivedi, K.S.
Copyright Year	2002
Description	Author affiliation: Dept. of Comput. Sci., Duke Univ., Durham, NC, USA (Wei Jin)
Abstract	We characterize a broad class C of prefetching algorithms and prove that, for any prefetching algorithm in this class, its total elapsed time is no more than twice the smallest possible total elapsed time. This result provides a performance guarantee for several practical prefetching algorithms, which fall into this class and have no previously proven performance bound. Prefetching involves making two fundamental decisions: when to begin a prefetch operation and which page to replace. Provably optimal prefetching algorithms are rendered impractical because of complicated techniques to decide when to issue prefetches. However, a class C algorithm only has to obey certain simple (previously known) guidelines governing these decisions. The performance guarantee for this class strongly relies on the optimal replacement requirement, and this suggests that more so than the decision of when to start prefetching the next missing page, the replacement decision remains the most important decision to be made in prefetching algorithms.
Sponsorship	IEEE Comput. Soc. Tech. Committee on Fault-Tolerant Comput. (TCFTC) IFIP Working Group 10.4 on Dependable Comput. & Fault Tolerence DARPA LAAS-CNRS Univ. Michigan
Starting Page	571
Ending Page	580
File Size	373886
Page Count	10
File Format	PDF
ISBN	0769511015
DOI	10.1109/DSN.2002.1029003
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-06-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Prefetching Memory management Algorithm design and analysis Cache memory Computer science Poles and towers Guidelines
Content Type	Text
Resource Type	Article

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