УДК 519.872
АНАЛИЗ МОДЕЛЕЙ СИСТЕМ С ГЕТЕРОГЕННЫМИ СЕРВЕРАМИ
Аннотация. Исследована математическая модель системы обслуживания с гетерогенными серверами и без очередей при наличии заявок двух типов. Заявки высокого приоритета обслуживаются в высокоскоростных серверах, а заявки низкого приоритета — в низкоскоростных. В случаях занятости всех серверов в соответствующих группах допускается обслуживание поступившей заявки в другой группе, при этом переназначения заявок осуществляются согласно рандомизированной схеме. Считается, что вероятности переназначения зависят от числа занятых серверов в соответствующей группе. Разработаны методы точного и приближенного анализа характеристик этой системы и получены явные формулы для приближенного вычисления ее характеристик.
Ключевые слова: гетерогенный сервер, система обслуживания, приоритеты, разнотипные заявки, оптимизация.
ПОЛНЫЙ ТЕКСТ
Меликов Агаси Зарбали оглы,
чл.-кор. НАН Азербайджана, доктор техн. наук, профессор, заведующий лабораторией Института систем управления НАН Азербайджана, Баку,
agassi.melikov@rambler.ru
Пономаренко Леонид Анатольевич,
доктор техн. наук, профессор, главный научный сотрудник Международного научно-учебного центра информационных технологий и систем НАН Украины и МОН Украины, Киев,
laponomarenko@ukr.net
Мехбалыева Эсмира Видади кызы,
кандидат техн. наук, докторант Сумгаитского государственного университета, Азербайджан.
СПИСОК ЛИТЕРАТУРЫ
- Gumbel H. Waiting lines with heterogeneous servers. Operations Research. 1960. Vol. 8, Iss. 4. P. 504–511.
- Singh V.S. Two-server Markovian queues with balking: Heterogeneous vs homogeneous servers. Operations Research. 1970. Vol. 18, Iss 1. P. 145–159.
- Singh V.S. Markovian queues with three servers. IIE Transactions. 1971. Vol. 3, Iss. 1. P. 45–48.
- Fakinos D. The blocking system with heterogeneous servers. Journal of Operations Research Society. 1980. Vol. 31, Iss. 10. P. 919–927.
- Fakinos D. The generalized blocking system with heterogeneous servers. Journal of Operations Research Society. 1982. Vol. 33, Iss. 9. P. 801–809.
- Nath G., Enns E. Optimal service rates in the multi-server loss system with heterogeneous servers. Journal of Applied Probability. 1981. Vol. 18, Iss. 3. P. 776–781.
- Alpaslan F., Shahbazov A. An analysis and optimization of stochastic service with heterogeneous channels and Poisson arrivals. Pure and Apllied Mathematika Science. 1996. Vol. 43. P. 15–20.
- Lin B.W., Elsayed E.A. A general solution for multichannel queueing systems with ordered entry. Computers & Operations Research. 1978. Vol. 5, Iss. 4. P. 219–225.
- Elsayed E.A. Multichannel queueing systems with ordered entry and finite source. Computers & Operations Research. 1983. Vol. 10, Iss. 3. P. 213–222.
- Yao D.D. The arrangement of servers in an ordered-entry system. Operations Research. 1987. Vol. 35, Iss. 5. P. 759–763.
- Pourbabai B., Sonderman D. Server utilization factors in queueing loss systems with ordered entry and heterogeneous servers. Journal of Applied Probability. 1986. Vol. 23, Iss. 1. P. 236–242.
- Pourbabai B. Markovian queueing systems with retrials and heterogeneous servers. Computers & Mathematics with Applications. 1987. Vol. 13, Iss. 12. P. 917–923.
- Nawijn W.M. On a two-server finite queuing system with ordered entry and deterministic arrivals. European Journal of Operations Research. 1984. Vol. 18, Iss. 3. P. 388–395.
- Nawijn W.M. A Note on many-server queueing systems with ordered entry with an application to conveyor theory. Journal of Applied Probability. 1983. Vol. 20. P. 144–152.
- Yao D.D. Convexity properties of the overflow in an ordered-entry system with heterogeneous servers. Operations Research Letters. 1986. Vol. 5, Iss. 3. P. 145–147.
- Isguder H.O., Kocer U.U. Analysis of queueing system with ordered entry and no waiting line. Applied Mathematical Modelling. 2014. Vol. 38, Iss. 3. P. 1024–1032.
- Larsen R.L., Agrawala A.K. Control of heterogeneous two-server exponential queueing system. IEEE Transactions on Software Engineering. 1983. Vol. SE-9, Iss. 4. P. 522–526.
- Koole G. A simple proof of the optimality of a threshold policy in a two-server queueing system. Systems & Control Letter. 1995. Vol. 26, Iss. 5. P. 301–303.
- Lin W., Kumar P.R. Optimal control of queueing system with two heterogeneous servers. IEEE Transactions on Automatic Control. 1984. Vol. 29, Iss. 8. P. 696–703.
- Luh H.P., Viniotis I. Threshold control policies for heterogeneous servers systems. Mathematical Methods in Operational Research. 2002. Vol. 55, Iss. 1. P. 121–142.
- Weber R. On a conjecture about assigning jobs to processors of different speeds. IEEE Transactions on Automatic Control. 1993. Vol. 38, Iss. 1. P. 166–170.
- Efrosinin D. Sztrik J. Optimal control of a two-server heterogeneous queueing system with breakdowns and constant retrials. In: Information Technologies and Mathematical Modelling — Queueing Theory and Applications. ITMM 2016. Communications in Computer and Information Science. Dudin A., Gortsev A., Nazarov A., Yakupov R. (Eds.). 2016. Vol. 638. P. 57–72.
- Efrosinin D. Sztrik J., Farkhadov M., Stepanova N. Reliability analysis of two-server heterogeneous queueing system with threshold control policy. In: Information Technologies and Mathematical Modelling. Queueing Theory and Applications. ITMM 2017. Communications in Computer and Information Science. Dudin A., Nazarov A., Kirpichnikov A. (Eds.). 2017. Vol. 800. P. 13–27.
- Viniotis I., Ephremides A. Extension of the optimality of a threshold policy in heterogeneous multi-server queueing systems. IEEE Transactions on Automatic Control. 1988. Vol. 33, Iss. 1. P. 104–109.
- Rosberg Z., Makowski A.M. Optimal routing to parallel heterogeneous servers — Small arrival rates. IEEE Transactions on Automatic Control. 1990. Vol. 35, Iss. 7. P. 789–796.
- Rykov V.V. Monotone control of queueing systems with heterogeneous servers. Queueing Systems. 2001. Vol. 37. P. 391–403.
- Rykov V.V., Efrosinin D. On the slow server problem. Automation and Remote Control. 2009. Vol. 70, Iss. 12. P. 2013–2023.
- Neuts M.F. Matrix-geometric solutions in stochastic models: An algorithmic approach. Baltimore: John Hopkins University Press, 1981. 332 р.
- Mitrani I., Chakka R. Spectral expansion solution for a class of Markov models: Application and comparison with the matrix-geometric method. Performance Evaluation. 1995. Vol. 23, Iss. 3. P. 241–260.
- Chakka R. Spectral expansion solution for some finite capacity queues. Annals of Operations Research. 1998. Vol. 79. P. 27–44.
- Мelikov A.Z., Ponomarenko L.A., Rustamov A.M. Hierarchical space merging algorithm to analysis of open tandem queueing networks. Cybernetics and Systems Analysis. 2016. Vol. 52, N 6. P. 867–877.
- Melikov A.Z., Ponomarenko L.A., Kim C.S. Performance analysis and optimization of multi-traffic on communication networks. Berlin: Springer, 2010. 208 p.