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Priority in DBMS Resource Scheduling

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Author(s)
Carey, Michael J; Jauhari, Rajiv; Livny, Miron
Publisher
University of Wisconsin-Madison Department of Computer Sciences
Citation
TR828
Date
1989
Abstract
In this paper, we address the problem of priority scheduling in a database management system. We start by investigating the architectural consequences of adding priority to a DBMS. Specific priority-based schemes are then proposed for managing DBMS resources, including a priority-based disk scheduling algorithm and two approaches to adding priority to the buffer manager of a DBMS. We study the performance of our proposals through simulation, both individually and in combination. Our simulation results indicate that the objectives of priority scheduling cannot be met by a single priority-based scheduler. They show that, regardless of whether the system bottleneck is the CPU or the disk, priority scheduling on the critical resource must be complemented by a priority-based buffer management policy.
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http://digital.library.wisc.edu/1793/59086 
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