The Investigation of the Availability at Cloud Service Systems

: pp. 218 - 228
Lviv Polytechnic National University
Lviv Polytechnic National University
Lviv Polytechnic National University
Lviv Polytechnic National University

This paper is devoted to the numerical investigation of the availability at cloud service systems. In this paper criteria and constraints calculations were performed and obtained results were analyzed for synthesis purposes of distributed service platforms based on the cloud service-oriented architecture such as availability and system performance index variations by defined set of the main parameters. The method of synthesis has been numerically generalized considering the type of service workload in statistical form by Hurst parameter application for each integrated service that requires implementation within the service delivery platform, which is synthesized by structural matching of virtual machines using combination of elementary servicing components up to functionality into a best-of-breed solution. As a result of restrictions from Amdahl’s Law the necessity of cloud-networks clustering was shown, which makes it possible to break the complex dynamic network into separate segments that simplifies access to the resources of virtual machines and, in general, to the “clouds” and respectively simplifies complex topological structure, enhancing the overall system performance. In overall, proposed approaches and obtained results numerically justifying and algorithmically describing the process of structural and functional synthesis of efficient distributed service platforms, which under process of their configuring and exploitation provides an opportunity to act on the dynamic environment in terms of comprehensive services range and nomadic users’ workload pulsing. It was also proved that using proposed approach and algorithm promotes us to determine structural-topological changes operatively in dynamics. It allows improving workload balancing in the servicing nodes, avoiding the proximity of workflows and components of complex services to structural irregularities. The whole spatial workflow distribution on the servicing network is optimized and smoothed in accordance with operatively determined workload and structural features.

Cloud system service node’s availability is improved. Prospective usage of proposed algorithm is looking effectively within distance-vector routing protocols (such as BGP) and, in particular at hyperbolic virtual coordinates mapping, where hyper-aggregation of the flows on the edges of Poincare disk’s irregularities is observed.

1. 2. 3. Klymash M. M., “Enhancement of the servicing quality in the converged mobile systems on the basis of UMA-A platform” [Electronic resource] / M. M. Klymash, M. I. Beshley, B. M. Strykhalyuk, H. V. Kholyavka // Problems of Telecommunications. — 2014. — № 1 (13). — P. 3–19. — The access mode to the issue: 4. Klymash M. M., “The model of services providing on the basis of cloud-system logical structure adaptation method” / M. M. Klymash, B. M. Strykhalyuk, О. M. Shpur, M. I. Beshley // Scientific proceeding of Ukrainian Research Institute of Communication. — 2014. — No. 5(33). — С. 27–36. 5. Beshley M. SOA quality management subsystem on the basis of load balancing method using fuzzy sets [Electronic resource]/ M. Beshley, M. Klymash, B.Strykhalyuk, O. Shpur, B. Bugil, I. Kagalo // International Journal of Computer Science and Software Engineering (IJCSSE). — 2015. — Vol. 4. — Issue 1. — P. 10–21. — The access mode:—The title from screen. 6. Klymash M. M., “The common optimization technique for telecommunication network structures by the criterion of its resources distribution effectiveness” [Electronic resource] / M. M. Klymash, B. A. Bugil // Information processing systems. — 2013. — Issue 7. — P. 72–78. — The access mode: 7. P. Barham, B. Dragovic, K. Fraser, S. Hand, T. Harris, A. Ho, R. Neugebauer, I. Pratt, and A.Warfield, “Xen and the artof virtualization”. in SOSP’03: Proceedings of the nine-teenth ACM symposium on Operating systems principles. New York, NY, USA: ACM, 2003, pp. 164–177. 8. Klymash M. M., “The simulation and provision of the buffer’s utilization in the multi service traffic distribution system using auto stopping technique” [Electronic resource] / M. M. Klymash, O. A. Lavriv, B. A. Bugil, R. I. Bak // Problems of Telecommunications. — 2011. — No. 2 (4). — P. 108–117. — The access mode to the issue: 9. N. Kryvinska, C. Strauss, “Conceptual Model of Business Services Availability vs. Interoperability on Collaborative IoT-enabled eBusiness Platforms”, in the “Internet of Things and Inter-cooperative Computational Technologies for Col-lective Intelligence”, book Ed.: N. Bessis and F. Xhafa, D. Varvarigou, R. Hill, and M. Li, the book series “Studies in Computational Intelligence”, (SCI-460), Springer-Verlag Berlin Heidelberg, 2013, ISBN: 978-3-642- 34951-5, pp. 167–187. 10. Ivan Demydov, Mohamed Mehdi El Hatri, Olga Shpur. Dynamic Correction of Routing Metrics by Pervasive Structural Routing in the Scalable Distributed Service Networks // Problems of Infocommunications Science and Technology (PIC S&T), 2015 Second International Scientific-Practical Conference, 13–15 Oct. 2015, Kharkiv, Ukraine. — P. 164–166. 11. Demydov I. V. The structural- functional synthesis of cloud service delivery platform after service availability and performance criteria / I. V. Demydov, B. M. Strykhalyuk, O. M. Shpur, Mohamed Mehdi El Hatri, Y. V. Klymash // Information processing systems. — 2015. — No. 1. — P. 144–159. 12. Andrei Agapi et al. Routers for the Cloud // IEEE Internet Computing. — 2011. — No. 11. — P. 72–76. 13. Detecting all the faces and outside edge for planar graph (in Russian) [Electronic resource] // 14. Kurapov S. V., Kondratyeva N. A. The algorithm for graph planarity (in Russian) // The Bulletin of Zaporizhzhya State University. — 2001. — № 1. — 15. N. Kryvinska, C. Strauss, “Next Generation Networks — Service Delivery and Management”, Book, Electronic Business series, vol. 7, International Academic Publishers, Peter Lang Publishing Group, 2011; ISBN-978-3-631-60871-5; ISSN: 1868-646X. N. Kryvinska, Converged Network Service Architecture: A Platform for Integrated Services Delivery and Interworking. Electronic Business series edited by C. Strauss, vol. 2, International Academic Publishers, Peter Lang Pub-lishing Group, 2010; ISBN-13:978-3631595251; ISSN:1868-646X. 16. Walter F. Witt Keep Your Feet on the Ground When Moving Software into the Cloud / Walter F. Witt // International Journal of Digital Content Technology and its Applications. — 2010. — Volume 4, Number 2. — P. 10–17. 17. Demydov, I., Klymash, M., Kryvinska, N., and Strauss, C. (2012) ’Enterprise Distributed Service Platform — Network Architecture and Topology Optimization’, Int. J. Space-Based and Situated Computing, 2(1), 2012, pp. 23–30. 18. Demydov I. Analysis of service workflows distribution and service deliveryplatform parameters / Ivan Demydov, Orest Lavriv, Bohdan Buhyl, Yuriy Dobush, Mykhailo Klymash // Int. J. Services, Economics and Management. — 2013. — Vol. 5, No. 4. — Р. 280–290. 19. G. M. Amdahl. The validity of the single processor approach to achieving large-scale computing capabilities. In Proceedings of AFIPS Spring Joint Computer Conference, Atlantic City, N.J., AFIPS Press, 1967. 20. Strykhalyuk B. M., “A statistical parameters and characteristics study of informational flows in heterogeneous networks” / B. M. Strykhalyuk, I. V. Demydov, V. I. Romanchuk, M. I. Beshley // Scientific proceeding of Ukrainian Research Institute of Communication. — 2014. — No. 6(34). — P. 82–92. 21. Strykhalyuk B. M., “The structural and functional optimization of virtual machines migration processes at distributed datacenters” / B. M. Strykhalyuk, Z. M. Kharkhalis, I. V. Demydov // Computer technologies of printing: scientific proceedings. — 2014. — No. 32. — P. 69–81.