InfoSys 2026 Congress
March 08, 2026 to March 12, 2026 - Valencia, Spain

  • ICNS 2026, The Twenty-Second International Conference on Networking and Services
  • ICAS 2026, The Twenty-Second International Conference on Autonomic and Autonomous Systems
  • ENERGY 2026, The Sixteenth International Conference on Smart Grids, Green Communications and IT Energy-aware Technologies
  • WEB 2026, The Fourteenth International Conference on Building and Exploring Web Based Environments
  • DBKDA 2026, The Eighteenth International Conference on Advances in Databases, Knowledge, and Data Applications
  • SIGNAL 2026, The Eleventh International Conference on Advances in Signal, Image and Video Processing
  • BIOTECHNO 2026, The Eighteenth International Conference on Bioinformatics, Biocomputational Systems and Biotechnologies
  • AIHealth 2026, The Third International Conference on AI-Health

InfoWare 2026 Congress
March 08, 2026 to March 12, 2026 - Valencia, Spain

  • ICCGI 2026, The Twenty-First International Multi-Conference on Computing in the Global Information Technology
  • ICWMC 2026, The Twenty-Second International Conference on Wireless and Mobile Communications
  • VEHICULAR 2026, The Fifteenth International Conference on Advances in Vehicular Systems, Technologies and Applications
  • INTERNET 2026, The Eighteenth International Conference on Evolving Internet
  • COLLA 2026, The Sixteenth International Conference on Advanced Collaborative Networks, Systems and Applications
  • INTELLI 2026, The Fifteenth International Conference on Intelligent Systems and Applications
  • VISUAL 2026, The Eleventh International Conference on Applications and Systems of Visual Paradigms
  • HUSO 2026, The Twelfth International Conference on Human and Social Analytics
  • BRAININFO 2026, The Eleventh International Conference on Neuroscience and Cognitive Brain Information

DataSys 2026 Congress
April 19, 2026 to April 23, 2026 - Lisbon, Portugal

  • AICT 2026, The Twenty-Second Advanced International Conference on Telecommunications
  • ICIW 2026, The Twenty-First International Conference on Internet and Web Applications and Services
  • ICIMP 2026, The Twenty-First International Conference on Internet Monitoring and Protection
  • SMART 2026, The Fifteenth International Conference on Smart Cities, Systems, Devices and Technologies
  • IMMM 2026, The Sixteenth International Conference on Advances in Information Mining and Management
  • INFOCOMP 2026, The Sixteenth International Conference on Advanced Communications and Computation
  • MOBILITY 2026, The Sixteenth International Conference on Mobile Services, Resources, and Users
  • SPWID 2026, The Twelfth International Conference on Smart Portable, Wearable, Implantable and Disability-oriented Devices and Systems
  • ACCSE 2026, The Eleventh International Conference on Advances in Computation, Communications and Services

ComputationWorld 2026 Congress
April 19, 2026 to April 23, 2026 - Lisbon, Portugal

  • SERVICE COMPUTATION 2026, The Eighteenth International Conference on Advanced Service Computing
  • CLOUD COMPUTING 2026, The Seventeenth International Conference on Cloud Computing, GRIDs, and Virtualization
  • FUTURE COMPUTING 2026, The Eighteenth International Conference on Future Computational Technologies and Applications
  • COGNITIVE 2026, The Eighteenth International Conference on Advanced Cognitive Technologies and Applications
  • ADAPTIVE 2026, The Eighteenth International Conference on Adaptive and Self-Adaptive Systems and Applications
  • CONTENT 2026, The Eighteenth International Conference on Creative Content Technologies
  • PATTERNS 2026, The Eighteenth International Conference on Pervasive Patterns and Applications
  • COMPUTATION TOOLS 2026, The Seventeenth International Conference on Computational Logics, Algebras, Programming, Tools, and Benchmarking
  • BUSTECH 2026, The Sixteenth International Conference on Business Intelligence and Technology
  • AIVR 2026, The Third International Conference on Artificial Intelligence and Immersive Virtual Reality
  • CROSS-SEC 2026, The First International Conference on Cross-Domain Security in Distributed, Intelligent and Critical Systems

NexComm 2026 Congress
May 24, 2026 to May 28, 2026 - Venice, Italy

  • ICDT 2026, The Twenty-First International Conference on Digital Telecommunications
  • SPACOMM 2026, The Eighteenth International Conference on Advances in Satellite and Space Communications
  • ICN 2026, The Twenty-Fifth International Conference on Networks
  • ICONS 2026, The Twenty-First International Conference on Systems
  • MMEDIA 2026, The Eighteenth International Conference on Advances in Multimedia
  • PESARO 2026, The Sixteenth International Conference on Performance, Safety and Robustness in Complex Systems and Applications
  • CTRQ 2026, The Nineteenth International Conference on Communication Theory, Reliability, and Quality of Service
  • ALLDATA 2026, The Twelfth International Conference on Big Data, Small Data, Linked Data and Open Data
  • SOFTENG 2026, The Twelfth International Conference on Advances and Trends in Software Engineering

DigitalWorld 2026 Congress
May 24, 2026 to May 28, 2026 - Venice, Italy

  • ICDS 2026, The Twentieth International Conference on Digital Society
  • ACHI 2026, The Nineteenth International Conference on Advances in Computer-Human Interactions
  • GEOProcessing 2026, The Eighteenth International Conference on Advanced Geographic Information Systems, Applications, and Services
  • eTELEMED 2026, The Eighteenth International Conference on eHealth, Telemedicine, and Social Medicine
  • eLmL 2026, The Eighteenth International Conference on Mobile, Hybrid, and On-line Learning
  • eKNOW 2026, The Eighteenth International Conference on Information, Process, and Knowledge Management
  • ALLSENSORS 2026, The Eleventh International Conference on Advances in Sensors, Actuators, Metering and Sensing
  • SMART ACCESSIBILITY 2026, The Eleventh International Conference on Universal Accessibility in the Internet of Things and Smart Environments

IARIA Congress 2026, The 2026 IARIA Annual Congress on Frontiers in Science, Technology, Services, and Applications
July 05, 2026 to July 09, 2026 - Nice, France

DigiTech 2026 Congress
July 05, 2026 to July 09, 2026 - Nice, France

  • DIGITAL 2026, Advances on Societal Digital Transformation
  • IoTAI 2026, The Third International Conference on IoT-AI
  • GPTMB 2026, The Third International Conference on Generative Pre-trained Transformer Models and Beyond
  • AIMEDIA 2026, The Second International Conference on AI-based Media Innovation

NexTech 2026 Congress
September 27, 2026 to October 01, 2026 - Barcelona, Spain

  • UBICOMM 2026, The Twentieth International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies
  • ADVCOMP 2026, The Twentieth International Conference on Advanced Engineering Computing and Applications in Sciences
  • SEMAPRO 2026, The Twentieth International Conference on Advances in Semantic Processing
  • AMBIENT 2026, The Sixteenth International Conference on Ambient Computing, Applications, Services and Technologies
  • EMERGING 2026, The Eighteenth International Conference on Emerging Networks and Systems Intelligence
  • DATA ANALYTICS 2026, The Fifteenth International Conference on Data Analytics
  • GLOBAL HEALTH 2026, The Fifteenth International Conference on Global Health Challenges
  • CYBER 2026, The Eleventh International Conference on Cyber-Technologies and Cyber-Systems

SoftNet 2026 Congress
September 27, 2026 to October 01, 2026 - Barcelona, Spain

  • ICSEA 2026, The Twenty-First International Conference on Software Engineering Advances
  • ICSNC 2026, The Twenty-First International Conference on Systems and Networks Communications
  • CENTRIC 2026, The Nineteenth International Conference on Advances in Human-oriented and Personalized Mechanisms, Technologies, and Services
  • VALID 2026, The Eighteenth International Conference on Advances in System Testing and Validation Lifecycle
  • SIMUL 2026, The Eighteenth International Conference on Advances in System Modeling and Simulation
  • SOTICS 2026, The Sixteenth International Conference on Social Media Technologies, Communication, and Informatics
  • INNOV 2026, The Fifteenth International Conference on Communications, Computation, Networks and Technologies
  • AISyS 2026, The Third International Conference on AI-based Systems and Services

TechWorld 2026 Congress
September 27, 2026 to October 01, 2026 - Barcelona, Spain

SocSys 2026 Congress
October 25, 2026 to October 29, 2026 - Lisbon, Portugal

  • PANDEMICS ANALYTICS 2026, International Conference on Pandemics Analytics
  • PREDICTION SOLUTIONS 2026, International Conference on Prediction Solutions for Technical and Societal Systems
  • SOCIETY TRENDS 2026, International Conference on Technical Advances and Human Consequences
  • MODERN SYSTEMS 2026, International Conference of Modern Systems Engineering Solutions
  • AIVTS 2026, The Second International Conference on AI-enabled Unmanned Autonomous Vehicles and Internet of Things for Critical Services

NetWare 2026 Congress
October 25, 2026 to October 29, 2026 - Lisbon, Portugal

  • SENSORCOMM 2026, The Twentieth International Conference on Sensor Technologies and Applications
  • SENSORDEVICES 2026, The Seventeenth International Conference on Sensor Device Technologies and Applications
  • SECURWARE 2026, The Twentieth International Conference on Emerging Security Information, Systems and Technologies
  • AFIN 2026, The Eighteenth International Conference on Advances in Future Internet
  • CENICS 2026, The Nineteenth International Conference on Advances in Circuits, Electronics and Micro-electronics
  • ICQNM 2026, The Twentieth International Conference on Quantum, Nano/Bio, and Micro Technologies
  • FASSI 2026, The Twelfth International Conference on Fundamentals and Advances in Software Systems Integration
  • GREEN 2026, The Eleventh International Conference on Green Communications, Computing and Technologies
  • HEALTHINFO 2026, The Eleventh International Conference on Informatics and Assistive Technologies for Health-Care, Medical Support and Wellbeing

SustainableDigitalization 2026 Congress
October 25, 2026 to October 29, 2026 - Lisbon, Portugal

  • COCE 2026, The Third International Conference on Technologies for Marine and Coastal Ecosystems
  • CSRF 2026, The Third International Conference on Sustainable and Regenerative Farming
  • CADAT 2026, The Third International Conference on Accessible Digital Agriculture Technologies
  • CEEE 2026, The Second International Conference on Global Environment Ecosystem Equilibrium

 

ThinkMind // International Journal On Advances in Telecommunications, volume 14, numbers 1 and 2, 2021 // View article tele_v14_n12_2021_7

Cloud Cost Optimization Based on Shifted N-policy M/M/M/K Queue Model

Authors:
Zsolt Saffer

Keywords: optimization; cloud model; queueing model; N-policy.

Abstract:
Cloud cost optimization is an important issue having also impact on the economy of the Cloud service, since it enables the Cloud service provider the service provisioning at minimum cost. This paper provides the performance analysis and cost optimization of an Infrastructure-as-a-Service Cloud model with a capacity control policy. The Virtual Machines are modelled as parallel resources, which can be either in active or in standby state. The capacity of the cloud is controlled by changing the number of active Virtual Machines. The cost model, which the cloud provider encounters, takes into account both energy consumption and performance measures. The major objective of the work is to provide a tractable analytic model, which is suitable for practical use. For this purpose, we model the Cloud services by an M/M/M/K queue. We propose a simple control policy, in which a predefined portion of Virtual Machines are always active. The remaining ones are activated simultaneously when the number of requests reaches a threshold and deactivated when the number of requests falls below the predefined portion of active Virtual Machines. We call this policy as shifted N-policy. We provide the stationary analysis of the model and derive closed form results for the distribution of the number of requests as well as for several performance measures. The cost model leads to a discrete optimization task, which we approximate by a nonlinear continuous optimization task. After applying numerous approximations, we provide, in form of solution formulas, approximate solutions of the optimization task in the two most relevant traffic ranges. We give illustrating examples for the most important approximations and properties of the model as well as validate the approximate solution formulas by numeric optimization. The major results of the work are the closed form approximate solution formulas, which give the optimal threshold under the most relevant ranges of parameters and provide insight into the dependency of the optimum on the model and cost parameters.

Pages: 70 to 99

Copyright: Copyright (c) to authors, 2021. Used with permission.

Publication date: December 31, 2021

Published in: journal

ISSN: 1942-2601
SERVICES CONTACT
2010 - 2022 © ThinkMind. All rights reserved.
Read Terms of Service and Privacy Policy.