Telecom & Networking
Advanced

Queue Utilisation

Fraction of a server's capacity being used by arriving traffic.

Formula

ρ=λμ\rho = \frac{\lambda}{\mu}

Variables

\rhoUtilisation
\lambdaArrival rate
\muService rate

Example

λ=80, μ=100: ρ = 0.8

Did You Know?

As utilisation approaches 1, queuing delay heads toward infinity — why networks never run fully loaded.

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