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Determining Hit Ratios for Multilevel Hierarchies

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1 Author(s)
Gecsei, J. ; IBM Canada, 5 Place Ville Marie, Montreal, Canada

The applicability of stack processing for evaluation of storage hierarchies has been limited to two-level systems and to a very special group of multilevel hierarchies. A generalization of stack processing, called joint stack processing, is introduced. This technique makes possible the efficient determination of hit ratios for a class of multilevel hierarchies—staging hierarchies. These hierarchies are rather realistic in the sense that they allow for multiple block sizes and multiple copies of data in the hierarchy. Properties of storage management schemes that lend themselves to joint stack processing are studied, and the notion of distributed hierarchy management is described and illustrated.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

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IBM Journal of Research and Development  (Volume:18 ,  Issue: 4 )