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Modeling the effects of data and resource contention on the performance of optimistic concurrency control protocols

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3 Author(s)
Dan, A. ; Distributed Comput. Syst. Lab., Massachusetts Univ., Amherst, MA, USA ; Towsley, D.F. ; Kohler, Walter H.

The authors use a mean value model for data contention and a piecewise linear model for resource contention. To show the usefulness of this methodology, they compare three different optimistic concurrency control protocols for a centralized system. The authors derive a closed-form expression for the transaction throughput as a function of workload parameters and the resource-access-time parameters. The resource-access-time parameters can be derived using a simple analytical model. The closed-form expressions are very useful as a quick evaluation of different protocols and to gain insight about protocol performance over a wide range of model parameters. They also yield a simple asymptotic analysis of the optimistic concurrency control protocols. The authors apply the methodology to predict the performance of a testbed database system

Published in:

Data Engineering, 1988. Proceedings. Fourth International Conference on

Date of Conference:

1-5 Feb 1988