Practical Prefetching Techniques for Multiprocessor File Systems


David Kotz and Carla Schlatter Ellis. Practical Prefetching Techniques for Multiprocessor File Systems. Journal of Distributed and Parallel Databases, volume 1, number 1, pages 33–51. Kluwer Academic Publishers, January 1993. doi:10.1007/BF01277519. ©Copyright Kluwer Academic Publishers. Identical to kotz:bpractical. Revision of kotz:practical.


Improvements in the processing speed of multiprocessors are outpacing improvements in the speed of disk hardware. Parallel disk I/O subsystems have been proposed as one way to close the gap between processor and disk speeds. In a previous paper we showed that prefetching and caching have the potential to deliver the performance benefits of parallel file systems to parallel applications. In this paper we describe experiments with practical prefetching policies that base decisions only on on-line reference history, and that can be implemented efficiently. We also test the ability of these policies across a range of architectural parameters.

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Projects: [rapid-transit]

Keywords: [pario]

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[Kotz research]