Визначення метрик якості сервісу у гетерогенній розподіленій cloud-системі
Date
2019-02-26
Journal Title
Journal ISSN
Volume Title
Publisher
Видавництво Львівської політехніки
Lviv Politechnic Publishing House
Lviv Politechnic Publishing House
Abstract
Досліджено процес навантажувального тестування розподіленої гетерогенної
інформаційно-телекомунікаційної системи, яка базується на cloud інфраструктурі. За
результатами навантажувального тестування виявлено вузьке місце у досліджуваній
системі, а також отримано оцінки використання інфраструктурних компонентів системи
і значень метрик якості обслуговування та якості сприйняття послуг користувачами
досліджуваної інформаційно-телекомунікаційної системи. Показано, що оновлення
програмного коду системи робить неможливим розроблення та використання універсальних
моделей, оскільки навіть незначні зміни програмного коду призводять до
зміни поведінки системи, що не може бути враховано як у аналітичній, так і у
імітаційній моделях.
The rapid development of information technology today is inextricably connected with telecommunication systems that provide the transmission of information between components of distributed information services. Since the partition of services, which are not limited to the only computer system physically prevailing the partition of centralized services, the role of telecommunications is very important. Along with the client-server and peer-to-peer architecture of distributed information and telecommunication systems, Cloud-systems, Fogsystems appear, and the widespread of Internet technology leads to the fact that telecommunication systems have the function of supporting the universal information space. We performed the load testing of the distributed heterogeneous information and telecommunication system based on the cloud infrastructure. The results of load testing revealed a bottleneck in the system. We also simulated utilization of infrastructure components and metrics of service quality and quality of experience. It has been shown that updating of the system code makes it impossible to design and use universal models of the system, since even minor changes to the code which logically combine the components of the system leads to a change in the behavior of the system, which cannot be considered in both analytical and simulation models. In this regard, the proposed methodology for the investigation of distributed heterogeneous information and telecommunication systems based on cloud infrastructure is an important tool in their design and operation and allows solving the problem of harmonizing the levels of the proposed conceptual structure of information and telecommunication systems with improvement of service quality metrics and optimal distribution of resources of such systems.
The rapid development of information technology today is inextricably connected with telecommunication systems that provide the transmission of information between components of distributed information services. Since the partition of services, which are not limited to the only computer system physically prevailing the partition of centralized services, the role of telecommunications is very important. Along with the client-server and peer-to-peer architecture of distributed information and telecommunication systems, Cloud-systems, Fogsystems appear, and the widespread of Internet technology leads to the fact that telecommunication systems have the function of supporting the universal information space. We performed the load testing of the distributed heterogeneous information and telecommunication system based on the cloud infrastructure. The results of load testing revealed a bottleneck in the system. We also simulated utilization of infrastructure components and metrics of service quality and quality of experience. It has been shown that updating of the system code makes it impossible to design and use universal models of the system, since even minor changes to the code which logically combine the components of the system leads to a change in the behavior of the system, which cannot be considered in both analytical and simulation models. In this regard, the proposed methodology for the investigation of distributed heterogeneous information and telecommunication systems based on cloud infrastructure is an important tool in their design and operation and allows solving the problem of harmonizing the levels of the proposed conceptual structure of information and telecommunication systems with improvement of service quality metrics and optimal distribution of resources of such systems.
Description
Keywords
розподілена гетерогенна інформаційно-телекомунікаційна система, якість надання послуг, навантажувальне тестування, cloud інфраструктура, distributed heterogeneous information and telecommunication system, load balancing, quality of service provision, load testing, cloud infrastructure, inter-level interaction
Citation
Визначення метрик якості сервісу у гетерогенній розподіленій cloud-системі / О. А. Лаврів, Р. І. Бак, В. З. Пашкевич, М. М. Климаш // Вісник Національного університету “Львівська політехніка”. Серія: Радіоелектроніка та телекомунікації. — Львів : Видавництво Львівської політехніки, 2019. — № 914. — С. 36–48.