INPUTS

lambda

Arrival rate of requests (scalar, lambda ≥ 0).

D(k)

service demand at center $k$. (vector of length $K$, D(k) ≥ 0).

S(k)

mean service time at center $k$. (vector of length $K$, S(k) ≥ 0).

V(k)

mean number of visits to center $k$. (vector of length $K$, V(k) ≥ 0).

m(k)

number of servers at center $k$. This function only supports $M/M/1$ queues, therefore m must be ones(size(S)).

OUTPUTS

Xl

Xu

Lower and upper bounds on the system throughput. Xl is always set to $0$ since there can be no lower bound on the throughput of open networks (scalar).

Rl

Ru

Lower and upper bounds on the system response time. Ru is always set to +inf since there can be no upper bound on the throughput of open networks (scalar).

See also: qnomaba