Real-Time Kernels & Deterministic Scheduling for Physical Machines

Analyzing worst-case execution time (WCET), SCHED_DEADLINE scheduling, CPU core isolation, and lock-free ring buffers in physical automation where a missed deadline is a catastrophic failure.

1. Architectural Determinism & Worst-Case Execution Guarantees

In cyber-physical systems governed by RealWorldControl, time is a correctness criterion rather than a performance metric. The architecture enforces strict CPU isolation, static task scheduling, and priority inheritance mutexes to ensure that high-priority control tasks meet deadlines deterministically.

2. Time-Sensitive Networking & Zero-Packet-Loss Transport

By deploying IEEE 802.1Qbv time-aware shapers alongside 802.1CB frame replication, RealWorldControl creates dedicated time-gated slots on standard Ethernet cables. Control frames traverse the physical network alongside high-bandwidth video streams without incurring packet jitter or buffer queue drops.

3. Safety Watchdogs & Fail-Operational Envelope Enforcement

Safety integrity is guaranteed through dual-channel redundant monitoring. If an operating condition diverges from the validated kinematic envelope or a control thread misses its deadline window, hardware interlocks automatically trigger a controlled deceleration or safe de-energization in compliance with ISO 13849.

Key Engineering Requirements

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