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Fundamental characteristics of queues with fluctuating load

Published: 26 June 2006 Publication History

Abstract

Systems whose arrival or service rates fluctuate over time are very common, but are still not well understood analytically. Stationary formulas are poor predictors of systems with fluctuating load. When the arrival and service processes fluctuate in a Markovian manner, computational methods, such as Matrix-analytic and spectral analysis, have been instrumental in the numerical evaluation of quantities like mean response time. However, such computational tools provide only limited insight into the functional behavior of the system with respect to its primitive input parameters: the arrival rates, service rates, and rate of fluctuation.For example, the shape of the function that maps rate of fluctuation to mean response time is not well understood, even for an M/M/1 system. Is this function increasing, decreasing, monotonic? How is its shape affected by the primitive input parameters? Is there a simple closed-form approximation for the shape of this curve? Turning to user experience: How is the performance experienced by a user arriving into a "high load" period different from that of a user arriving into a "low load" period, or simply a random user. Are there stochastic relations between these? In this paper, we provide the first answers to these fundamental questions.

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Published In

cover image ACM SIGMETRICS Performance Evaluation Review
ACM SIGMETRICS Performance Evaluation Review  Volume 34, Issue 1
Performance evaluation review
June 2006
388 pages
ISSN:0163-5999
DOI:10.1145/1140103
Issue’s Table of Contents
  • cover image ACM Conferences
    SIGMETRICS '06/Performance '06: Proceedings of the joint international conference on Measurement and modeling of computer systems
    June 2006
    404 pages
    ISBN:1595933190
    DOI:10.1145/1140277
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

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Publication History

Published: 26 June 2006
Published in SIGMETRICS Volume 34, Issue 1

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Author Tags

  1. MAP
  2. MMPP
  3. Ross's conjecture
  4. fluctuating load
  5. non-stationary arrivals/service
  6. stochastic ordering

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  • (2021)SCALING PROPERTIES OF QUEUES WITH TIME-VARYING LOAD PROCESSES: EXTENSIONS AND APPLICATIONSProbability in the Engineering and Informational Sciences10.1017/S0269964821000048(1-42)Online publication date: 3-Mar-2021
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