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Queueing Resources M/M/s –Online http://www.usm.maine.edu/math/JPQ/ http://www.usm.maine.edu/math/JPQ/ –Lpc(rho,c) function from textbook (fails on Excel 2007,2008) G/G/s –QTP http://www.business.ualberta.ca/aingolfsson/QTP/ (fails on Excel for mac) http://www.business.ualberta.ca/aingolfsson/QTP/ G/G/s + Networks –Online http://staff.um.edu.mt/jskl1/simweb http://staff.um.edu.mt/jskl1/simweb –ORMM book queue.xla (fails on Excel 2008) http://www.me.utexas.edu/~jensen/ORMM/frontpage/jensen.lib
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Online M/M/s Calculator (JPQ) http://www.usm.maine.edu/math/JPQ/ click here for M/M/s queues
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fill out: 1.arrival rate 2.service rate 3.# servers put any numbers here (e.g., 1) Press Compute
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utilization L q = E[N q ] W q = E[T q ] L = E[N] W = E[T] Results
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Customer threshold n Probability # number in system >= n
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Time threshold t Probability time in system >= t
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Time threshold tq Probability time in queue >= tq
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Standard deviation of 1.Queue length N q 2. Number in system N 3. Time in queue T q 4. Time in system T
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