Work out header overhead percentage instantly with clear inputs, formula shown and shareable results.
Header overhead as a share of the frame is what determines goodput, and it is brutal at small frame sizes: a 128-byte frame with 58 bytes of headers wastes 45 percent of the link. That is also where packet rate peaks, so small-frame traffic stresses both bandwidth efficiency and the forwarding engine's packets-per-second ceiling simultaneously.
Overhead and goodput
overhead share = headers / frame size; goodput = link speed x payload / frame size; frames per second = link bits / (frame bytes x 8)
Because it is the worst case for packets per second. A device that handles line rate at 64 bytes will handle any traffic mix.
No. Throughput usually includes headers; goodput counts only application payload. Benchmarks that mix the two are not comparable.