The need for deterministic virtualization in the industrial internet of things

Real-Time virtualization is commonly accepted to act as one of the key enablers of Fog Computing and the Industrial Internet of Things (IIoT). We motivate requirements which any hypervisor qualifying as a deterministic virtualization solution for IIoT should fulfill. We characterize existing work in the field of real-time virtualization to illustrate the trade-off between flexibility and deterministic execution. Furthermore, we indicate a lack of hypervisors that meet all of our requirements on deterministic virtualization. Our preliminary experimental results comparing the system latencies of ACRN, KVM, and Xen RTDS support our claim for the need of further investigation of deterministic virtualization.

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