Title: A probabilistic analysis of transactions success ratio in real-time databases

Authors: Mourad Kaddes; Majed Abdouli; Laurent Amanton; Bruno Sadeg; Alexandre Berred; Rafik Bouaziz

Addresses: Department of Information System, FCIT, University of Jeddah, Saudi Arabia; MIR@CL, Pôle Technologique de Sfax BP 242, 3021, Sfax University, Tunisia ' Department of Information System, FCIT, University of Jeddah, Saudi Arabia; MIR@CL, Pôle Technologique de Sfax BP 242, 3021, Sfax University, Tunisia ' LITIS, University of Le Havre, 25 rue Philipe Lebon 76600, Le Havre, France ' LITIS, University of Le Havre, 25 rue Philipe Lebon 76600, Le Havre, France ' LMAH, University of Le Havre, 25 rue Philipe Lebon 76600, Le Havre, France ' MIR@CL, Pôle Technologique de Sfax BP 242, 3021, Sfax University, Tunisia

Abstract: Nowadays, due to rapidly changing technologies, applications handling more data and providing real-time services are becoming more frequent. Real-time database systems are the most appropriate systems to manage these applications. In this paper, we study statistically the behaviour of real-time transactions under the generalised earliest deadline first scheduling policy (GEDF). GEDF is a new scheduling policy in which a priority is assigned to a transaction according to both its deadline and a parameter which expresses the importance of the transaction in the system. In this paper, we focus our study on the influence of transactions composition. Precisely, we study the influence of transaction distribution on the system performances and on approximation of transactions success ratio behaviour by a probability distribution. To this end, we have developed our RTDBS simulator and we have conducted intensive Monte-Carlo simulations.

Keywords: real-time databases system; RTDBS; transactions; schedule; generalised earliest deadline first; GEDF; stochastics; Monte-Carlo simulation.

DOI: 10.1504/IJCAET.2020.107440

International Journal of Computer Aided Engineering and Technology, 2020 Vol.12 No.4, pp.405 - 422

Received: 01 Dec 2016
Accepted: 14 Nov 2017
Published online: 29 May 2020 *

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