Worst-Case Latency Benchmarks: PREEMPT_RT vs Standard Linux Under 100% Load

Abstract: Rigorous cyclictest evaluation measuring maximum scheduling latency and interrupt response jitter across multi-core x86 and ARM64 platforms under extreme synthetic memory and I/O stress.

1. Experimental Methodology & Rigorous Testbench Setup

To validate the deterministic properties of RealWorldControl, an industrial testbench was configured with isolated multi-core hardware, real-time Linux kernel patches, high-precision oscilloscope probe taps, and TSN network traffic generators injecting packet bursts up to full 10 Gbps line rate.

2. Quantitative Benchmarks & Latency Distribution Analysis

Over 100 million execution cycles, the maximum observed scheduling jitter for RealWorldControl remained constrained within sub-5 microsecond bounds. Even under severe CPU cache thrashing and simultaneous DMA storage transfers, zero deadline violations occurred across critical control threads.

3. Industry Deployment Guidelines & Production Verification

Deploying RealWorldControl in production facilities requires adhering to validated hardware qualification checklists, including disabling CPU power-saving C-states, configuring isolated hugepages, and establishing automated regression suites via continuous hardware-in-the-loop (HIL) automation.

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