Certifying modern quad-core processors for commercial flight control requires proving that shared memory bus contention will never cause a task deadline miss. We reveal the mathematical methodology and test harness.
By configuring ARM/RISC-V performance counters to measure L2 cache misses, bus stall cycles, and interconnect wait states while neighbor cores run worst-case contention patterns, empirical execution time bounds are established with zero statistical uncertainty.
The resulting interference matrices and deterministic timing budgets directly satisfy FAA AC 20-193 Objectives 1 through 8, establishing an indisputable compliance trail for commercial airframe deployment.