Each solid curve is the exact Amdahl model for a fixed workload; p is the share that can run in parallel and n is the core count. As cores arrive across the plot, the serial share remains single-file, so every curve bends toward its dashed ceiling. For a food manufacturer, this is why adding servers may barely move planning, labeling, or traceability workflows when one sequential database step dominates. Optimize the serial path before buying more parallel capacity.