Mathematical modelling for performability analysis of homogeneous multi-server systems with deferred repairs.

Book chapter

Ever, E. and Gemikonakli, O. 2006. Mathematical modelling for performability analysis of homogeneous multi-server systems with deferred repairs. in: The proceedings of the European Modelling Symposium: 11-12 September 2006. London UCL. pp. 84-88
Chapter titleMathematical modelling for performability analysis of homogeneous multi-server systems with deferred repairs.
AuthorsEver, E. and Gemikonakli, O.
Abstract

Fault-tolerant systems with repair-upon-failure strategy can become expensive in terms of labour and time. Especially for homogeneous multi-server systems, if no control hierarchy exists, postponing non essential repairs can reduce these costs without affecting the availability of the whole system significantly. While postponing these repairs, it is essential to keep the whole system capable to deal with user requests. For this purpose, usually, a threshold value is defined which represents the minimum number of servers the system administrator should keep operative. Performability evaluation of such systems is very important. In this paper, the performance modelling of a homogeneous, multi-server system, serving a stream of arriving jobs is considered. To analyse the effects of various deferred repair strategies, such systems are modelled and solved for exact performability measures for both bounded and unbounded queuing systems.

Research GroupSensoLab group
Page range84-88
Book titleThe proceedings of the European Modelling Symposium: 11-12 September 2006.
PublisherUCL
Place of publicationLondon
ISBN
Hardcover9780951650936
Publication dates
Print2006
Publication process dates
Deposited30 Mar 2009
Output statusPublished
LanguageEnglish
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Kirsal, Y., Gemikonakli, E., Ever, E., Mapp, G., Gemikonakli, O. and Middlesex University 2010. An analytical approach for performance analysis of handoffs in the next generation integrated cellular networks and WLANs. IEEE. https://doi.org/10.1109/ICCCN.2010.5560093
Exploring a new Markov chain model for multiqueue systems.
Mapp, G., Thakker, D. and Gemikonakli, O. 2010. Exploring a new Markov chain model for multiqueue systems. Al-Dabass, D., Orsoni, A., Cant, R. and Abraham, A. (ed.) IEEE Computer Society. pp. 592-597 https://doi.org/10.1109/UKSIM.2010.113
Level dependent band QBD processes: Steady state solution and applications.
Gemikonakli, O., Chakka, R., Papp, D. and Do, T. 2004. Level dependent band QBD processes: Steady state solution and applications. in: Exploring the effect of inter-flow interference on TCP performance in http://www.comp.brad.ac.uk/het-net/HET-NETs04/CameraPapers/WP8.pdf. Glasgow University of Glasgow, Department of Computing Science. pp. WP8/1-WP8/6
A solution for the problem of trusted third party for IEEE 802.11b networks
Gemikonakli, O., Kirsal, Y. and Eneh, A. 2005. A solution for the problem of trusted third party for IEEE 802.11b networks. in: Merabti, M. (ed.) 6th Annual postgraduate symposium on the convergence of telecommunications, networking and broadcasting: PGNET 2005. Liverpool Liverpool John Moores University, School of Computing & Mathematical Sciences. pp. 333-338
Improving Kerberos security through the combined use of the timed authentication protocol and frequent key renewal
Gemikonakli, O. and Kirsal, Y. 2008. Improving Kerberos security through the combined use of the timed authentication protocol and frequent key renewal. in: Cybernetics and intelligent systems: 2008 IEEE Conference Institute of Electrical and Electronics Engineers. pp. 153-158
Further improvements to the Kerberos timed authentication protocol
Gemikonakli, O. and Kirsal, Y. 2008. Further improvements to the Kerberos timed authentication protocol. in: Sobh, T. (ed.) Advances in computer and information sciences and engineering. Dordrecht Springer.
Frequent key renewal under pseudo-secure conditions for increased security in kerberos authentication and its impact on system performability
Gemikonakli, O. and Kirsal, Y. 2007. Frequent key renewal under pseudo-secure conditions for increased security in kerberos authentication and its impact on system performability. in: Jahankhani, H. (ed.) Global e-Security: proceedings of the 3rd Annual International Conference, 2007 ICGeS.
An authentication protocol to address the problem of the trusted 3rd Party authentication protocols
Gemikonakli, O. and Kirsal, Y. 2007. An authentication protocol to address the problem of the trusted 3rd Party authentication protocols. in: Elleithy, K. (ed.) Advances and innovations in systems, computing sciences and software engineering. Springer.
Modelling and performability analysis of network memory servers.
Gemikonakli, O., Mapp, G., Thakker, D., Ever, E. and Society for Modeling and Simulation International 2006. Modelling and performability analysis of network memory servers. in: 39th Annual Simulation Symposium: proceedings. California IEEE Computer Society. pp. 127-134
Modelling network memory servers with parallel processors, break-downs and repairs.
Gemikonakli, O., Mapp, G., Ever, E. and Thakker, D. 2007. Modelling network memory servers with parallel processors, break-downs and repairs. California IEEE Computer Society. pp. 11-20 https://doi.org/10.1109/ANSS.2007.29
Analysis of a phase-shift technique for inter-modulation cancellation proposed for 2-Carrier QPSK Systems.
Gemikonakli, O. 2006. Analysis of a phase-shift technique for inter-modulation cancellation proposed for 2-Carrier QPSK Systems. in: ICCTA '06: International conference on information and communication technologies; from theory to applications, 24-28 April 2006, Damascus, Syria. Institute of Electrical and Electronics Engineers.
E-Government and its Applications.
Gemikonakli, O. 2006. E-Government and its Applications. The Chamber of Architects and Engineers, TRNC. Nicosia, Cyprus, Aug 2006
A phase-shift technique for intermodulation cancellation.
Gemikonakli, O. and Institution of Electrical Engineers 2003. A phase-shift technique for intermodulation cancellation. in: Ninth international conference on HF radio systems and techniques. London IEEE. pp. 75-77
Analysis of security protocols for authentication in distributed systems
Gemikonakli, O. and Eneh, A. 2006. Analysis of security protocols for authentication in distributed systems. in: Cardoso, J. (ed.) Special issue: applied reconfigurable computing: papers selected from the First International Workshop on Applied Reconfigurable Computing (ARC 2005), held in conjunction with the IADIS International Conference Applied Computing (AC2005) in Algarve. London Taylor and Francis. pp. 301-305
The pre-emptive protocol design and analysis: hope for secure communication in societies with economic deprivation.
Gemikonakli, O. and Eneh, A. 2005. The pre-emptive protocol design and analysis: hope for secure communication in societies with economic deprivation. International journal of technology, knowledge and society.. 1 (5), pp. 35-42.
A new performance model for web servers.
Gemikonakli, O., Chakka, R., Do, T., Le Xhat, T. and École Supérieure d'Ingénieurs en Électronique et Électrotechnique. 2004. A new performance model for web servers. in: Attiya, G. and Hamam, Y. (ed.) 5th EUROSIM congress on modeling and simulation. Paris ESIEE.
Approaches to modelling open networks with bursty arrivals.
Gemikonakli, O., Chakka, R. and Harrison, P. 2002. Approaches to modelling open networks with bursty arrivals. in: Kouvatsos, D. (ed.) Performance modelling and evaluation of ATM & IP networks: [15 papers selected from those originally accepted at the eighth IFIP workshop on 'performance modelling and evaluation of ATM&IP networks']. Amsterdam Elsevier.
Modelling multiserver systems with time or operation dependent breakdowns, alternate repair strategies, reconfiguration and rebooting delays
Gemikonakli, O., Chakka, R. and Basappa, P. 2002. Modelling multiserver systems with time or operation dependent breakdowns, alternate repair strategies, reconfiguration and rebooting delays. in: Obaidat, M. (ed.) Proceedings of the 2002 international symposium on performance evaluation of computer and telecommunication systems, SPECTS 2002. San Diego, Calif. Society for Modeling and Simulation International.
Analytical modelling of large scale multi-server systems with deferred repairs: a reward rate approach.
Kocyigit, A., Ever, E., Gemikonakli, O. and Institute of Electrical and Electronics Engineers 2008. Analytical modelling of large scale multi-server systems with deferred repairs: a reward rate approach. in: Computer modeling and simulation , 2008 . EMS '08 . Second UKSIM European symposium. IEEE Computer Society. pp. 447-452
Cost reduction in high power computing using a deferred repair strategy: a simulation study
Kocyigit, A., Gemikonakli, O. and Ever, E. 2008. Cost reduction in high power computing using a deferred repair strategy: a simulation study. in: Al-Dabass, D. (ed.) UKSIM 2008: Tenth International Conference on Computer Modelling and Simulation: proceedings. Los Alamitos, California IEEE Computer Society. pp. 354-359
Numerical solution to the performability of a multiprocessor system with reconfiguration and rebooting delays.
Ever, E., Gemikonakli, O., Chakka, R., Do, T. and European conference on modelling and simulation (19th) 2005. Numerical solution to the performability of a multiprocessor system with reconfiguration and rebooting delays. in: Merkuryev, Y., Zobel, R. and Kerchoffs, E. (ed.) Simulation in wider Europe: 19th European conference on modelling and simulation ECMS 2005. ECMS. pp. 766-770
Approximate solution for the performability of Markovian queuing networks with a large number of servers.
Gemikonakli, O., Sanei, H. and Ever, E. 2007. Approximate solution for the performability of Markovian queuing networks with a large number of servers. 5th International Workshop on Signal Processing for Wireless Communication SPWC 2007,. London, UK 06 - 08 Jun 2007
An analytical approach for optimising the number of repairmen for large scale, homogeneous, multi-server systems
Ever, E., Gemikonakli, O., Sanei, H. and Kocyigit, A. 2008. An analytical approach for optimising the number of repairmen for large scale, homogeneous, multi-server systems. EMSS 2008: 20th European modeling and simulation symposium. Briatico, Italy
A mathematical model for performability evaluation of heterogeneous multiprocessor systems with reconfiguration and rebooting delays.
Ever, E., Gemikonakli, O., Chakka, R. and Do, T. 2005. A mathematical model for performability evaluation of heterogeneous multiprocessor systems with reconfiguration and rebooting delays. in: Teixeira, J. (ed.) Modelling and simulation 2005: the European simulation and modelling conference 2005, ESM 2005. Ghent EUROSIS.
Performability analysis of highly available clusters with break-downs and deferred repairs.
Ever, E., Gemikonakli, O. and Chakka, R. 2006. Performability analysis of highly available clusters with break-downs and deferred repairs. HET-NETs '06 : 4th International working conference on performance modelling and evaluation of heterogeneous networks.. Ilkley, West Yorkshire, U.K pp. 05/1-05/9
A mathematical model for performability of Beowulf clusters.
Ever, E., Gemikonakli, O. and Chakka, R. 2006. A mathematical model for performability of Beowulf clusters. in: 39th Annual Simulation Symposium: proceedings. California IEEE Computer Society. pp. 118-126
A mathematical model for highly available clusters with one head and several identical computing nodes.
Ever, E., Gemikonakli, O. and Chakka, R. 2006. A mathematical model for highly available clusters with one head and several identical computing nodes. in: Al-Begain, K., Al-Dabass, D. and Orsoni, A. (ed.) UKSIM 2006: 9th International conference on computer modelling and simulation. Oxford United Kingdom Society for Modelling and Simulation. pp. 32-37
Joint-state modeling for open queuing networks with breakdowns, repairs and finite buffers.
Chakka, R., Ever, E. and Gemikonakli, O. 2007. Joint-state modeling for open queuing networks with breakdowns, repairs and finite buffers. MASCOTS 2007: 15th International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunication Systems.. Istanbul, Turkey 24 - 26 Oct 2007 IEEE. pp. 260-266 https://doi.org/10.1109/MASCOTS.2007.29
Modelling open networks with breakdowns, repairs and finite buffers: using an IPP departure process model
Chakka, R., Ever, E. and Gemikonakli, O. 2006. Modelling open networks with breakdowns, repairs and finite buffers: using an IPP departure process model. 10th International Conference on Computers. Athens, Greece 13 - 15 Jul 2006
An approach to modelling open networks with unreliable servers and finite buffers.
Chakka, R., Ever, E. and Gemikonakli, O. 2006. An approach to modelling open networks with unreliable servers and finite buffers. WSEAS Transactions on Computers. 5 (11), pp. 2536-2543.
An overview of analysis of security standards for authentication in distributed systems.
Gemikonakli, O. and Eneh, A. 2005. An overview of analysis of security standards for authentication in distributed systems. in: Weghorn, H. (ed.) Proceedings : and the proceedings of workshops: WIS '05, MSVVEIS '05, NLUCS '05, IWUC '05, WOSIS '05, CSAC '05, PRIS '05, WSMDEIS '05 and DCEIS '05 ; Miami, U.S.A., May 24 - 28, 2005 Setúbal Institute for Systems and Technologies of Information, Control and Communication.