Practical Prefetching Techniques for Multiprocessor File Systems


David Kotz and Carla Schlatter Ellis. Practical Prefetching Techniques for Multiprocessor File Systems. High Performance Mass Storage and Parallel I/O: Technologies and Applications, chapter 17, pages 245–258. Edited by Hai Jin, Toni Cortes, and Rajkumar Buyya. Wiley-IEEE Press, New York, NY, September 2001. ISBN13: 978-0-471-20809-9. ©Copyright Wiley-IEEE Press. Identical to kotz:jpractical.


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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