A Comparative Analysis of Disk Scheduling Policies.

Toby J. Teorey, Tad B. Pinkerton: A Comparative Analysis of Disk Scheduling Policies. Commun. ACM 15(3): 177-184(1972)
  author    = {Toby J. Teorey and
               Tad B. Pinkerton},
  title     = {A Comparative Analysis of Disk Scheduling Policies},
  journal   = {Commun. ACM},
  volume    = {15},
  number    = {3},
  year      = {1972},
  pages     = {177-184},
  ee        = {db/journals/cacm/TeoreyP72.html},
  bibsource = {DBLP,}


Five well-known scheduling policies for movable head disks are compared using the performance criteria of expected seek time (system oriented) and expected waiting time (individual I/O request oriented). Both analytical and simulation results are obtained. The variance of waiting time is introduced as another meaningful measure of performance, showing possible discrimination against individual requests. Then the choice of a utility function to measure total performance including system oriented and individual request oriented measures is described. Such a function allows one to differentiate among the scheduling policies over a wide range of input loading conditions. The selection and implementation of a maximum performance two-policy algorithm are discussed.

Copyright © 1972 by the ACM, Inc., used by permission. Permission to make digital or hard copies is granted provided that copies are not made or distributed for profit or direct commercial advantage, and that copies show this notice on the first page or initial screen of a display along with the full citation.

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Referenced by

  1. Paul M. Bober, Michael J. Carey: Multiversion Query Locking. VLDB 1992: 497-510
  2. Shahram Ghandeharizadeh, David J. DeWitt, Waheed Qureshi: A Performance Analysis of Alternative Multi-Attribute Declustering Strategies. SIGMOD Conference 1992: 29-38
  3. Thomas Keller, Goetz Graefe, David Maier: Efficient Assembly of Complex Objects. SIGMOD Conference 1991: 148-157
  4. Shahram Ghandeharizadeh, David J. DeWitt: Hybrid-Range Partitioning Strategy: A New Declustering Strategy for Multiprocessor Database Machines. VLDB 1990: 481-492
  5. Michael J. Carey, Rajiv Jauhari, Miron Livny: Priority in DBMS Resource Scheduling. VLDB 1989: 397-410
  6. Dina Bitton, Jim Gray: Disk Shadowing. VLDB 1988: 331-338
  7. Stavros Christodoulakis: Analysis of Retrieval Performance for Records and Objects Using Optical Disk Technology. ACM Trans. Database Syst. 12(2): 137-169(1987)
  8. Ching-Chao Liu, Toshimi Minoura: Effect of Update Merging on Reliable Storage Performance. ICDE 1986: 208-213
  9. Dennis G. Severance, John V. Carlis: A Practical Approach to Selecting Record Access Paths. ACM Comput. Surv. 9(4): 259-272(1977)
  10. Kenneth Omahen: Estimating Response Time for Auxiliary Memory Configuartions with Multiple Movable-Head Disk Modules. VLDB 1975: 473-495
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