Derived quantities in Queuing system:
• λ = A / T, Arrival rate
• X = C / T, Throughput or completion rate
• ρ =U= B / T, Utilization
• S = B / C, Mean service time per completed job
• μ = 1 / S, Service rate
• Dk = VkSk , Service demand
• Rk = Wk + Sk, Residence time