A framework for guaranteeing statistical QoS
IEEE/ACM Transactions on Networking (TON)
QoS-Centric Stateful Resource Management in Information Systems
Information Systems Frontiers
Using Disk Throughput Data in Predictions of End-to-End Grid Data Transfers
GRID '02 Proceedings of the Third International Workshop on Grid Computing
Predictive Application-Performance Modeling in a Computational Grid Environment
HPDC '99 Proceedings of the 8th IEEE International Symposium on High Performance Distributed Computing
IPDPS '01 Proceedings of the 15th International Parallel and Distributed Processing Symposium (IPDPS'01) - Volume 1
Rule-Base Technique for Component Adaptation to Support QoS-based Reconfiguration
ISORC '05 Proceedings of the Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing
QoS Requirements of Network Applications on the Internet
Information-Knowledge-Systems Management
A Software Cybernetics Approach to Deploying and Scheduling
FTDCS '07 Proceedings of the 11th IEEE International Workshop on Future Trends of Distributed Computing Systems
Requirements for QoS-based Web Service Description and Discovery
COMPSAC '07 Proceedings of the 31st Annual International Computer Software and Applications Conference - Volume 02
Secure Computer and Network Systems: Modeling, Analysis and Design
Secure Computer and Network Systems: Modeling, Analysis and Design
Enhancing Service-Side QoS Monitoring for Web Services
SNPD '08 Proceedings of the 2008 Ninth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing
COMPSAC '08 Proceedings of the 2008 32nd Annual IEEE International Computer Software and Applications Conference
Learning Application Models for Utility Resource Planning
ICAC '06 Proceedings of the 2006 IEEE International Conference on Autonomic Computing
Dynamic QoS and Network Control for Commercial VoIP Systems in Future Heterogeneous Networks
ISM '08 Proceedings of the 2008 Tenth IEEE International Symposium on Multimedia
A QoS-Based Web Services Selection Method for Dynamic Web Service Composition
ETCS '09 Proceedings of the 2009 First International Workshop on Education Technology and Computer Science - Volume 03
JCAI '09 Proceedings of the 2009 International Joint Conference on Artificial Intelligence
A QoS-oriented Optimization Model for Web Service Group
ICIS '09 Proceedings of the 2009 Eigth IEEE/ACIS International Conference on Computer and Information Science
A QoS Based Web Service Selection Model
IFITA '09 Proceedings of the 2009 International Forum on Information Technology and Applications - Volume 03
QoS and Preference Based Web Service Evaluation Approach
GCC '09 Proceedings of the 2009 Eighth International Conference on Grid and Cooperative Computing
A qos-aware selection model for semantic web services
ICSOC'06 Proceedings of the 4th international conference on Service-Oriented Computing
Voice quality prediction models and their application in VoIP networks
IEEE Transactions on Multimedia
A practical approach for providing QoS in the Internet backbone
IEEE Communications Magazine
Information-Knowledge-Systems Management
The analysis of service provider-user coordination for resource allocation in cloud computing
Information-Knowledge-Systems Management
Information-Knowledge-Systems Management
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Service quality on computer and network systems has become increasingly important as many conventional service transactions are moved online. Service quality of computer and network services can be measured by the performance of the service process in throughput, delay, and so on. On a computer and network system, competing service requests of users and associated service activities change the state of limited system resources which in turn affects the achieved service quality. Modeling dynamic relations of service activities, system state and service quality is required to determine if users' service requests and requirements of service quality can be satisfied by the system with limited resources and how the system and service configuration can be adapted to meet service quality requirements. This paper presents our empirical study to establish activity-state-quality models for a voice communication service. We run experiments to collect system dynamics data under various service conditions and use statistical techniques to analyze experimental data and build activity-state-quality models. The results reveal four major types of dynamic relations among service activity parameters, system resource state, and the network throughput - a measure of achieved service quality for the voice communication service. Although delay-related measures are also important for voice data communication, they are not collected in this study. Five system state variables concerning the memory, CPU, process and IP resources are uncovered to be affected by service activity parameters significantly and be associated with the achieved service quality closely. We also obtain an insight about increasing the size of the buffer which holds voice data before transmission over the network to alleviate the workload on system resources and maintain the network throughout when the number of client requests and the client requirement in voice quality increase.