Software Package for Solving Problems of Optimal Placement of Information Resources and Modeling the Impact of the Main Integrated Indicators on the Reactivity of Distributed Information Processing Systems

Abstract

This article describes a software package to solve the problem of optimal placement of information resources (fragments of a distributed database) on the nodes of a distributed information processing system by the criterion of the minimum average response time of the system to user requests. The software package consists of software-implemented mathematical models of distributed information processing systems based on file-server, two-level client-server and three-level client-server architecture, as well as optimization algorithm. The developed software product also allows to make experiments for obtaining and subsequent analysis of the dependence of the reactivity of distributed information processing systems on such integral characteristics as the dimension of the problem, the intensity of the formation of requests by users, the speed of message transmission through communication channels, the speed of reading, the speed of writing and processing in the nodes, which contributes to the planning of a more rational organization of the computational process in the system. The software was implemented on the Net Framework 4.6.1 C# platform using the Microsoft Visual Studio 2017 Сommunity development environment.