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Explore runtime verification monitors for real-time systems in this 19-minute conference talk from the Linux Plumbers Conference. Learn how PREEMPT_RT's mainline integration enables real-time guarantees in the Linux kernel, while discovering the critical importance of proper userspace application design for achieving true real-time behavior. Understand common latency-inducing mistakes such as failing to call mlockall() and using mutexes without priority inheritance that lead to priority inversion. Examine current runtime verification monitors that detect problematic patterns including real-time task page faults, priority violations, and unsafe API usage. Participate in discussions about potential enhancements to RV monitors, including warnings for blocking operations on various file descriptors, epoll/poll/ioctl calls, non-priority-inheritance futexes, and other userspace patterns. Contribute to establishing comprehensive guidelines for RT-safe interfaces, subsystems, and drivers to improve real-time application development practices.
