oversubscription

English

Etymology

From over- +‎ subscription.

Noun

oversubscription (countable and uncountable, plural oversubscriptions)

  1. A subscription for more than is available.
  2. (programming) A multithreading technique involving an extra thread that runs tasks when all other threads are blocked.
    • 2021, Hang Huang, Jia Rao, Song Wu, Hai Jin, Hong Jiang, “Towards Exploiting CPU Elasticity via Efficient Thread Oversubscription”, in Proceedings of the 30th International Symposium on High-Performance Parallel and Distributed Computing (HPDC '21), New York, NY, USA: Association for Computing Machinery, →DOI, →ISBN, pages 215–226:
      This paper explores thread oversubscription, i.e., provisioning more threads than the available cores, to exploit CPU elasticity in the cloud.
  3. (networking) The practice of connecting multiple devices to the same switch port in a storage area network.
    • 2018, Jon Tate, Pall Beck, Hector Hugo Ibarra, Introduction to Storage Area Networks, page 171:
      You can overcome the oversubscription of an ISL by adding an ISL between the switches to increase the bandwidth.
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