undersubscription

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
   • They may increase the size of the placing (green-shoe option) or decrease it in case of undersubscription.2013, Mario Levis, Silvio Vismara, Handbook of Research on IPOs, →ISBN, page 207
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