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Commit Processing in Distributed Real-Time Database Systems

Gupta, Ramesh and Haritsa, Jayant and Ramamritham, Krithi and Seshadri, S (1996) Commit Processing in Distributed Real-Time Database Systems. In: 17th IEEE Real- Time Systems Symposium, 4-6 December, 1996, Washington, DC. USA, pp. 220-229.


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We investigate here the performance implications of supporting transaction atomicity in a distributed real-time database system. Using a detailed simulation model of a firm-deadline distributed real-time database system, we profile the real-time performance of a representative set of commit protocols. A new commit protocol that is designed for the real-time domain and allows transactions to "optimistically" read uncommitted data is also proposed and evaluated, The experimental results show that data distribution has a significant influence on the real-time performance and that the choice of commit protocol clearly affects the magnitude of this injluence. Among the protocols evaluated, the new optimistic commit protocol provides the best performance for a variety of workloads and system configurations.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: ©1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Interdisciplinary Sciences > Supercomputer Education & Research Centre
Date Deposited: 25 Aug 2008
Last Modified: 19 Sep 2010 04:14
URI: http://eprints.iisc.ac.in/id/eprint/1088

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