Queueing Resources M/M/s –Online –Lpc(rho,c) function from textbook (fails on Excel.

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Presentation transcript:

Queueing Resources M/M/s –Online –Lpc(rho,c) function from textbook (fails on Excel 2007,2008) G/G/s –QTP (fails on Excel for mac) G/G/s + Networks –Online –ORMM book queue.xla (fails on Excel 2008)

Online M/M/s Calculator (JPQ) click here for M/M/s queues

fill out: 1.arrival rate 2.service rate 3.# servers put any numbers here (e.g., 1) Press Compute

utilization L q = E[N q ] W q = E[T q ] L = E[N] W = E[T] Results

Customer threshold n Probability # number in system >= n

Time threshold t Probability time in system >= t

Time threshold tq Probability time in queue >= tq

Standard deviation of 1.Queue length N q 2. Number in system N 3. Time in queue T q 4. Time in system T