Thrashing

  • Authors:
  • Peter J. Denning

  • Affiliations:
  • -

  • Venue:
  • Encyclopedia of Computer Science
  • Year:
  • 2003

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Abstract

Thrashing is an unstable collapse of throughput of a system of communicating servers, such as disk drives and CPUs, as the load is increased. It occurs when the heavy load shifts the bottleneck from a high-throughput to a low-throughput server. It violates the intuition that leads observers to expect throughput to increase smoothly toward a saturation level as load increases.