undersubscriptions

Noun

undersubscription (countable and uncountable, plural undersubscriptions)

1. The subscription of significantly less than is available.
   • There were no instances of undersubscriptions in SDL auctions of 28 states as against 18 such instances last year.2013, State Finances, page 57
2. The employment of more ports or bandwidth than necessary to ensure that network communication does not face delays.
   • End-to-end QoS along with appropriate bandwidth provisioning specifically for Intra-Cluster Communication Signaling (ICCS) is required. Overprovisioning and undersubscription of bandwidth is recommended.2014, Akhil Behl, CCIE Collaboration Quick Reference, →ISBN
3. The failure to provide sufficient threads in a multithreaded application.
   • When there are not enough running threads to optimally exploit available PEs undersubscription occurs, resulting in a waste of performance.2012, Victor Pankratius, Michael Philippsen, Multicore Software Engineering, Performance and Tools, →ISBN