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The growing use of virtualization technologies in settings such as multi-tenant compute and storage clouds challenges the authors to both specify and enforce the isolation of clients sharing network and compute resources. In this paper, they propose a novel analytical measure of performance isolation for shared resource systems serving multiple traffic flows or computing workloads. By basing their isolation measure on well-known results from network calculus, they demonstrate how isolation metrics can be calculated for flows traversing both individual system elements and networks of those elements.
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