Research on Real-time Virtualization Technology for Control System

In recent years, the combination of multi-core processor and virtualization technology promotes the rapid application of virtualization technology in the field of real-time control. While virtualization technology gives full play to the performance of multi-core processors and improves the robustness and flexibility of application systems, the real-time performance loss caused by application virtualization has always been concerned by people. On the basis of discussing the concept of real-time control system, the principle of virtualization technology and the existing approaches of real-time virtualization technology, the real-time connotation of the virtualized control system is defined. This paper analyzes the real-time and applicable scenarios of two application schemes, namely, large-scale virtualization based on private cloud and single-node virtualization based on HyperVisor, the related real-time virtualization technology and application scenarios are discussed, and builds a test environment, and measures the interrupt response time and event response time of the corresponding schemes. The former can only meet the application with millisecond real-time performance, while the latter still has sub-microsecond real-time performance, which can meet most real-time system requirements.