A Performance Evaluation Model For Distributed Real-Time Databases
Özgür Ulusoy, Geneva G. Belford · International Journal of Modelling and Simulation · 1995
A real-time database system (RTDBS) is designed to provide timely response to the transactions of data-intensive appHcations. Each transaction processed in an RTDBS is associated with a timing constraint in the form of a deadline. Efficient transaction-scheduling algorithms are required to minimize the number of missed transaction deadlines. In this paper a performance evaluation model is provided to enable distributed RTDBS designers to analyze transaction scheduUng algorithms. The model is developed progressing from a simple mathematical analysis to compHcated simulations. The performance is expressed in terms of the fraction of satisfied transaction deadlines. The paper also provides an example simulation experiment implemented using the model prescnted.