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Large IT organizations exchange their computer infrastructure on a regular time basis. When planning such an environment exchange, it is required to explicitly consider the impact on the Quality-of-Service of the applications to avoid violations of Service Level Agreements. In current practice, however, using explicit performance models for such estimations(More)
Operating systems for server environments are seen as mature entities of Information Technology. The most visible Software Architecture enhancements are done on the middleware or even the application layers. Nevertheless operating systems lay out the architectural base for the higher software levels. Especially an operating system like z/OS for IBM(More)
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