Several real-time related publications can help broaden your knowledge about real-time systems.

• Improving Linux for Real Time Workloads @ FOSForums 2023
• A realtime developer's checklist, LWN, 2020
• The Real-Time Linux Kernel: A Survey on PREEMPT_RT, 2019, copy
• Real-time kernel tuning in RHEL 9
• Presentations
• PSI - Pressure Stall Information
• cgroup.pressure