
Asymmetric Multiprocessing (AMP): Managing Inter-Processor Communication Without Latency Spikes
When an application core and a real-time core must exchange telemetry, control commands, or high-throughput sensor streams, naive IPC implementations frequently introduce unpredictable latency spikes. A single unexpected 50-microsecond delay in message delivery can cause missed deadline constraints, dropped audio frames, or catastrophic control loop instability in motor drives. Achieving sub-microsecond, zero-jitter IPC performance across an AMP boundary requires a deep, hardware-aware understanding of shared memory structures, cache coherence protocols, interrupt handling overhead, and software framework optimizations.
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