SLA-tree: a framework for efficiently supporting SLA-based decisions in cloud computing
Proceedings of the 14th International Conference on Extending Database Technology
Autonomic SLA-Driven Provisioning for Cloud Applications
CCGRID '11 Proceedings of the 2011 11th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing
ICA3PP'10 Proceedings of the 10th international conference on Algorithms and Architectures for Parallel Processing - Volume Part I
Concurrency and Computation: Practice & Experience
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In a federated Cloud environment, services may be composed of other services from different Clouds with different Cloud provider Quality-of-Service (QoS) guarantees. Providers running services on the multiple Clouds will be contractually obligated to meet or exceed the QoS which they have agreed to provide to their consumers. A key challenge for the service providers will be to demonstrate compliance to the agreed upon QoS. We present a basic mechanism to continuously measure QoS in a federated Cloud environment so that resources can be provisioned or de provisioned dynamically to meet Service Level Agreements. We have validated our mechanism by constructing prototypes and the results demonstrate that it is possible to continuously measure QoS at the minute granularity and for various service configurations prevalent in the industry