Latency Budget
Define the hops (speed and distance) and packet size and I compute the latency budget: serialization, propagation and processing delay, end to end.
One-way latency
—
end to end
RTT (round-trip)
—
≈ 2 × one-way
Dominant component
—
—
One-way breakdown
Serialization—
Propagation—
Processing—
One-way —
RTT —
Serial. —
Propag. —
How it is computed · serialization, propagation and processing
Serialization = time to put the bits on the
wire. packet_bits / speed_bps. E.g.:
1500 B at 1 Gbps = 1500×8 / 1e9 = 12 µs.
Propagation = signal travel time.
distance / v, with v ≈ 2×10⁸ m/s. E.g.:
100 km / 2e8 = 500 µs.
Processing = queue + switching per hop, a fixed value multiplied by the number of hops.
Total one-way =
Σ(serialization + propagation + processing) per link.
The RTT ≈ 2× the one-way latency.
Runs locally in your browser · no sign-up · nothing leaves your browser