Abstract
This paper provides a unifying method of generating and/or evaluating approximations for the principal congestion measures in aGI/G/s queueing system. The main focus is on the mean waiting time, but approximations are also developed for the queue-length distribution, the waiting-time distribution and the delay probability for the Poisson arrival case. The approximations have closed forms that combine analytical solutions of simpler systems, and hence they are referred to as system-interpolation approximations or, simply, system interpolations. The method in this paper is consistent with and generalizes system interpolations previously presented for the mean waiting time in theGI/G/s queue.
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U.N. Bhat, M. Shalaby and M.J. Fischer, Approximation techniques in the solution of queueing problems, Naval Res. Log. Quarterly 26 (1979) 311–326.
M. Björklund and A. Elldin, A practical method of calculation for certain types of complex common control systens, Ericsson Technics 20 (1964) 3–75.
O.J. Boxma, J.W. Cohen and N. Huffels, Approximations of the mean waiting time in anM/G/s queueing system, Oper. Res. 27 (1979) 1115–1127.
D.Y. Burman and D.R. Smith, A light traffic limit theorem for multi-server queues, Math. Oper. Res. 8 (1983) 15–25.
D.Y. Burman and D.R. Smith, Asymptotic analysis of a queueing model with bursty traffic, Bell Syst. Techn. J. 62 (1983) 1433–1453.
D.Y. Burman and D.R. Smith, Asymptotic analysis of a queueing model with Markov modulated arrivals, Oper. Res. 34 (1986) 105–119.
G.P. Cosmetatos, Approximate equilibrium results for the multi-server queue (GI/M/r), Oper. Res. Quarterly 25 (1974) 625–634.
G.P. Cosmetatos, Approximate explicit formulae for the average queueing time in the processes (M/D/r) and (D/M/r), INFOR 13 (1975) 328–332.
G.P. Cosmetatos, Some approximate equilibrium results for the multi-server queue (M/G/r), Oper. Res. Quarterly 27 (1976) 615–620.
G.P. Cosmetatos, Some approximate equilibrium results for the multi-server queue (E m /E k /r), Opsearch 14 (1977) 108–117.
G.P. Cosmetatos, Cobham's model on nonpreemptive multi-server queueing systems: a heuristic method for its generalization, Eur. J. Oper. Res. 1 (1977) 262–264.
G.P. Cosmetatos, Some practical considerations on multi-server queues with multiple Poisson arrivals, OMEGA 6 (1978) 443–448.
G.P. Cosmetatos, On the implementation of Page's approximation for waiting times in general multi-server queues. J. Oper. Res. Soc. 33 (1982) 1158–1159.
G.P. Cosmetatos and S.A. Godsave, Approximations in the multi-server queue with hyper exponential inter-arrival times and exponential service times, J. Oper. Res. Soc. 31 (1980) 57–62.
C.D. Crommelin, Delay probability formulae when the holding times are constant, Post Office Electrical Eng. J. 25 (1932) 41–50.
C.D. Crommelin, Delay probability formulae, Post Office Electrical Eng. J. 26 (1934) 266–274.
A.M. Eikeboom and H.C. Tijms, Waiting time percentiles in the multi-serverM x/G/c queue with batch arrivals, Prob. Eng. Int. Sci. 1 (1987) 75–98.
A.A. Fredericks, A class of approximations for the waiting time distribution in aGI/G/1 queueing system, Bell Syst. Techn. J. 61 (1982) 295–325.
D. Gross and C.M. Harris,Fundamentals of Queueing Theory, 2nd ed. (Wiley, 1985).
B. Halachmi and W.R. Franta, A diffusion approximation to the multi-server queue, Manag. Sci. 24 (1978) 522–529.
S. Halfin, Delays in queues, properties and approximations, in:Teletraffic Issues in an Advanced Information Society, ITC11, ed. M. Akiyama, Vol. 1 (North-Holland, 1986) pp. 1.4-3–1-6.
R. Haji and G.F. Newell, A relation between stationary queue and waiting time distributions, J. Appl. Prob. 8 (1971) 617–620.
P. Hokstad, Approximations for theM/G/m queue, Oper. Res. 26 (1978) 510–523.
P. Hokstad, Bounds for the mean queue length of theM/K 2/m queue, Eur. J. Oper. Res. 23 (1986) 108–117.
V.B. Iversen, Decomposition of anM/D/r·k queue with FIFO intok E k /D/r queues with FIFO, Oper. Res. Lett. 2 (1983) 20–21.
T. Kimura, Diffusion approximation for anM/G/m queue, Oper. Res. 31 (1983) 304–321.
T. Kimura, The queueing network analyzer: a survey (1)-(3) [in Japanese], Commun. Oper. Res. Soc. Japan 29 (1984) 366–371, 431–439, 494–500.
T. Kimura, Refining diffusion approximations forGI/G/1 queues: a tight discretization method, in:Teletraffic Issues in an Advanced Information Society, ITC11, ed. M. Akiyama, Vol. 1 (North-Holland, 1986) pp. 3.1A-2–1-7.
T. Kimura, A two-moment approximation for the mean waiting time in theGI/G/s queue, Manag. Sci. 32 (1986) 751–763.
T. Kimura, Approximations for the mean delay in theM/D/s queue,Proc. Seminar on Queueing Theory and Its Applications, Kyoto (1987) pp. 173–184.
T. Kimura, Heuristic approximations for the mean delay in theGI/G/s queue, Econ. J. Hokkaido Univ. 16 (1987) 87–98.
T. Kimura, Approximations for the waiting time in theGI/G/s queue, J. Oper. Res. Soc. Japan 34 (1991) 173–186.
T. Kimura, Refining Cosmetatos' approximation for the mean waiting time in theM/D/s queue, J. Oper. Res. Soc. 42 (1991) 595–603.
T. Kimura, Approximating the mean waiting time in theGI/G/s queue, J. Oper. Res. Soc. 42 (1991) 959–970.
T. Kimura, Interpolation approximations for the mean waiting time in a multi-server queue, J. Oper. Res. Soc. Japan 35 (1992) 77–92.
T. Kimura, Equivalence relations in the approximations for the finite capacityM/G/s queue, Discussion Paper Series A, No. 15, Faculty of Economics, Hokkaido University, Sapporo (1993).
T. Kimura, A transform-free approximation for the queue-length distribution in the finite capacityM/G/s queue, Discussion Paper Series A, No. 18, Faculty of Economics, Hokkaido University, Sapporo (1993).
T. Kimura, Approximations for the delay probability in theM/G/s queue, in:Stochastic Models in Engineering, Technology and Management, eds. S. Osaki and D.N. Pra Murthy (World Scientific, 1993) pp. 277–285.
J.F.C. Kingman, The single server queue in heavy traffic, Proc. Cambridge Phil. Soc. 57 (1961) 902–904.
J.F.C. Kingman, On queues in heavy traffic, J. Roy. Statist. Soc., Series B 24 (1962) 383–392.
J.F.C. Kingman, The heavy traffic approximation in the theory of queues, in:Proc. Symp. on Congestion Theory, eds. W.L. Smith and R.I. Wilkinson (Chapel Hill, 1964) pp. 137–169.
A.G. de Kok and H.C. Tijms, A two-moment approximation for a buffer design problem requiring a small rejection probability, Perf. Eval. 5 (1985) 77–84.
J. Köllerström, Heavy traffic theory for queues with several servers. I, J. Appl. Prob. 11 (1974) 544–552.
D.D. Kouvatsos and J. Almond, Maximum entropy two-station cyclic queues with multiple general servers, Acta Inf. 26 (1988) 241–267.
W. Krämer and M. Langenbach-Belz, Approximate formulae for the delay in the queueing systemGI/G/1, Proc. 8th Int. Teletraffic Congress, Melbourne (1976) pp. 235.1–8.
A.M. Lee and P.A. Longton, Queueing process associated with airline passenger check-in, Oper. Res. Quarterly 10 (1957) 56–71.
E. Maaløe, Approximation formulae for estimation of waiting-time in multiple-channel queueing systems, Manag. Sci. 19 (1973) 703–710.
M. Miyazawa, Approximation for the queue-length distribution of anM/GI/s queue by the basic equations, J. Appl. Prob. 23 (1986) 443–458.
M. Miyazawa, Rate conservation laws: a survey, Queueing Syst. 15 (1994) 1–58.
E.C. Molina, Application of the theory of probability to telephone trunking problems, Bell Syst. Techn. J. 6 (1927) 461–494.
S.A. Nozaki and S.M. Ross, Approximations in finite-capacity multi-server queues with Poisson arrivals, J. Appl. Prob. 15 (1978) 826–834.
NTT,Queueing Tables (The Electrical Communication Laboratories, Nippon Telegraph and Telephone Public Corporation, 1981).
E. Page,Queueing Theory in OR (Butterworth, 1972).
E. Page, Tables of waiting times forM/M/n, M/D/n andD/M/n and their use to give approximate waiting times in more general queues, J. Oper. Res. Soc. 33 (1982) 453–473.
M.I. Reiman and B. Simon, An interpolation approximation for queueing systems with Poisson input, Oper. Res. 36 (1988) 454–469.
H. Sakasegawa, An approximation formulaL q ≃αρβ/(1-ρ), Ann. Inst. Statist. Math. 29 (1977) Part A, 67–75.
L.P. Seelen, An algorithm forPh/Ph/c queues, Eur. J. Oper. Res. 23 (1986) 118–127.
L.P. Seelen and H.C. Tijms, Approximations for the conditional waiting times in theGI/G/c queue, Oper. Res. Lett. 3 (1984) 183–190.
L.P. Seelen and H.C. Tijms, Approximations to the waiting time percentiles in theM/G/c queue, in:Teletraffic Issues in an Advanced Information Society, ITC11, ed. M. Akiyama, Vol. 1 (North- Holland, 1986) pp. 1.4-4–1-5.
L.P. Seelen, H.C. Tijms and M.H. van Hoorn,Tables for Multi-Server Queues (North-Holland, 1985).
J.G. Shanthikumar and J.A. Buzacott, On the approximations to the single server queue, Int. J. Prod. Res. 18 (1980) 761–773.
H. Shore, Simple approximations for theGI/G/c queue — I: The steady-state probabilities, J. Oper. Res. Soc. 39 (1988) 279–284.
H. Shore, Simple approximations for theGI/G/c queue — II: The moments, the inverse distribution function and the loss function of the number in the system and of the queue delay, J. Oper. Res. Soc. 39 (1988) 381–391.
V.L. Smith, Approximating the distribution of customers inM/E n /s queues, J. Oper. Res. Soc. 36 (1985) 327–332.
D. Stoyan, Approximations forM/G/s queues, Math. Operationsforsch. Statistik 7 (1976) 587–594.
U. Sumita and M. Rieders, A new algorithm for computing the ergodic probability vector for large Markov chains: replacement process approach, Prob. Eng. Inf. Sci. 4 (1990) 89–116.
Y. Takahashi and Y. Takami, A numerical method for the steady-state probabilities of aGI/G/c queueing system in a general class, J. Oper. Res. Soc. Japan 19 (1976) 147–157.
Y. Takahashi, An approximation formula for the mean waiting time of anM/G/c queue, J. Oper. Res. Soc. Japan 20 (1977) 150–163.
H.C. Tijms,Stochastic Modelling and Analysis: A Computational Approach (Wiley, 1986).
H.C. Tijms, A quick and practical approximation to the waiting time distribution in the multiserver queue with priorities, in:Computer Performance and Reliability, eds. G. Iazeolla, P.J. Courtois and O.J. Boxma (North-Holland, 1987) pp. 161–169.
H.C. Tijms, M.H. van Hoorn and A. Federgruen, Approximations for the steady-state probabilities in theM/G/c queue, Adv. Appl. Prob. 13 (1981) 186–206.
M.H. van Hoorn,Algorithms and Approximations for Queueing Systems, CWI Tract No. 8 (CWI, 1983).
M.H. van Hoorn and H.C. Tijms, Approximations for the waiting time distribution of theM/G/c queue, Perf. Eval. 2 (1982) 22–28.
W. Whitt, The queueing network analyzer, Bell Syst. Techn. J. 62 (1983) 2779–2815.
W. Whitt, Comparison conjectures about theM/G/s queue, Oper. Res. Lett. 2 (1983) 203–209.
W. Whitt, Approximations for theGI/G/m queue, preprint (1985).
W. Whitt, An interpolation approximation for the mean workload in theGI/G/1 queue, Oper. Res. 37 (1989) 936–952.
R.W. Wolff, Poisson arrivals see time averages, Oper. Res. 30 (1982) 223–231.
J.-S. Wu, Refining the diffusion approximation for theG/G/c queue, Comp. Math. Appl. 20 (1990) 31–36.
J.-S. Wu and W.C. Chan, Maximum entropy analysis of multi-server queueing systems, J. Oper. Res. Soc. 40 (1989) 815–825.
D.D. Yao, Refining the diffusion approximation for theM/G/m queue, Oper. Res. 33 (1985) 1266–1277.
U. Yechiali, On the relative waiting time in theGI/M/s andGI/M/1 queueing systems, Oper. Res. Quarterly 28 (1977) 325–337.
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Kimura, T. Approximations for multi-server queues: System interpolations. Queueing Syst 17, 347–382 (1994). https://doi.org/10.1007/BF01158699
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DOI: https://doi.org/10.1007/BF01158699