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QoS-based service selection has been an active research area in both Service Computing and Cloud Computing communities in recent years. One of the obstacles for many researchers is lack of benchmark QoS datasets, especially for cloud service selection. In this paper, we propose a testbed system which can be used to collect the QoS data for software services hosted in the cloud. We mainly focus on...
A virtualized cloud platform may host several cloud services/applications simultaneously. Each hosted cloud service usually runs on a virtual cluster, consisting of several virtual machines (VMs) with a virtual network. In many cases, the virtual clusters share the overall physical network bandwidth. Thus, the quality of the cloud services sharing the same physical networks can be seriously affected...
This study attempts to upgrade the service efficiencies of cloud management by proposing different quality approaches. We design two detecting mechanisms to search the early violation signal by a different quality level of confidence. This research attempts to prevent assignable variables existed in violation situations. We proposed and verified the Moving Range Chart and EWMA Chart by utilizing CLOUDSIM...
Service Level Agreement (SLA) in cloud service provides quality and responsibility for both Data enter providers and customers. If a customer's required task is processed delayed then penalty of SLA violation are generated due to this shortage of resource allocation. The virtual machines (VMs) in lower utilization host or over utilization host will be migrated to the suitable hosts in an attempt to...
With the quality of service (QoS) of cloud services becoming increasingly concerned, how to ensure that the QoS of cloud services can meet the users' QoS requirement has become a focus of the study on cloud computing. However, the QoS of cloud services is dynamic regularly, we propose a QoS guarantee framework for cloud services and the Bayesian prediction method is used to predict QoS of cloud service...
As VoD systems migrate to the Cloud, new challenges emerge in managing user Quality-of- Experience (QoE). The complexity of the cloud system due to virtualization and resource sharing complicates the QoE management. Operational failures in the Cloud could be challenging for QoE as well. We believe that end users have the best perception of system performance in terms of their QoE. We propose a QoE...
Enterprise Cloud Computing has the complicated issues of the multi-tenancy, cross layer service composition, i.e., Software as a Service, Platform as a Service, and Infrastructure as a Service, multiple constraints from user requirements and Service Level Agreements. To assure the quality of service and effectiveness of Enterprise Cloud Computing, a middleware to support the service composition and...
As the cloud market is growing fast and more and more enterprises are moving their services to the cloud, assurance of cloud service quality becomes one of the key success factors of cloud business. Due to the dynamic nature of the cloud, it's more complicated to manage and guarantee quality level in the cloud than that in the telecommunication. In order to address these issues, we developed a service...
Aiming to discover the most suitable service cater to the discovery request of service consumer which includes functional requirements and nonfunctional requirements, this paper proposes a service registry model named as SRC (Service Registry on Cloud) which is an extension of the keywords based service registry model and deployed as a cloud application to provide behavior-aware and QoS-aware service...
Deploying state-of-the-art technologies is vital and inevitable in assistive healthcare to cope with emerging services such as remote monitoring, collaborative consultation, and electronic health record. Grid computing has succeeded somewhat in enabling the sharing of resources across organizations but has not been deployed widely due to its complex implementation and interface. Cloud computing overcomes...
Summary form only given. Accountability in Service Oriented Architecture (SOA) is a capability of making business processes across all participants (services, applications and people) accountable in terms of both business logic and Quality of Services (QoS). While accountability is a critical mechanism to enhance trust between collaborative services, there is the lack of standard accountability support...
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