Tag
real-time
- Jan 9, 2026 EDF, Utilization Bounds, and Schedulability Tests Why earliest-deadline-first reaches full utilization on one CPU, how the density test differs from the utilization test, and what breaks when deadlines exceed periods. operating systems
- Oct 16, 2025 Priority Inversion and Inheritance How a low-priority lock holder can stall a high-priority thread, why inheritance repairs the ordering, and what it costs in unlock complexity and chained blocking. operating systems
- Jul 31, 2025 Measuring and Bounding Interrupt Latency What latency means at each point between a device asserting and a thread running, which mechanisms inflate the tail, and why the distribution rather than the average is the design target. operating systems
- May 3, 2025 POSIX Real-Time Priority Classes and the Bandwidth Cap What SCHED_FIFO and SCHED_RR actually guarantee, why an unprivileged process cannot use them freely, and how a runtime cap keeps a runaway real-time thread from hanging the machine. operating systems
- Jan 18, 2024 Deadline Servers and Admission Control How a constant-bandwidth server gives any thread a deadline without trusting its behaviour, and why the admission test is what turns a priority into a guarantee. operating systems