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Virtualization, together with real-time support emerges to be used in an increasing amount of use cases, varying from embedded systems to enterprise computing.One of the most popular open-source virtualization software's is Xen.Its current implementation does not qualify it to be a candidate for timecritical systems.Researchers and developers extended it and claim the efficient usage of their versions in such systems. RT-Xen is one of these versions. It is a virtualization platform based on Compositional Scheduling and uses a suite of fixed-priority schedulers.This paper evaluates the performance and scheduling behaviour of RT-Xen.The test results show that only two proposed schedulers are suitable to be used for soft real-time applications.
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Fayyad-Kazan et al. (2013) studied this question.
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