Explore real-time (RT) system challenges and solutions in this 46-minute Linux Foundation conference talk. Delve into trouble areas, symptoms, and diagnostic tools like Kernel Shark and CPU Latency analysis. Examine write buffer issues, data path complexities, and internet driver concerns. Learn about mitigation strategies including forced readback, vacation timeouts, and soft IRQ hacks. Investigate HR timers, locking primitives, and priority inversion problems. Discuss the need for IRQs, threat identification, and queue management. Analyze watchdog examples and potential solutions. Cover security considerations, clock sources, and trace points. Gain insights into reboot testing and unarmed systems, equipping yourself with valuable knowledge for addressing RT system complexities.
RT Troubles, Lessons Learned, and Open Questions in Real-Time Systems