undersubscribe

verb3

1. •
   To subscribe to an extent that is far less than is available or desirable.

   • In all, our conceptual discussion suggests that firms may tend to undersubscribe to private industrial services, opening the way for government intervention. — 2015
2. •
   To have insufficient threads available in a multithreaded application so that all threads become blocked and performance suffers.

   • This forces the agent to either oversubscribe itself by submitting jobs to multiple queues at once or undersubscribe itself by submitting jobs to potentially long queues. — 2003
3. •
   To employ more switch ports than necessary so that high-priority traffic is sure to be handled right away.

   • In this way, MSPs can have the flexibility to oversubscribe lower-priority classes or even undersubscribe higher-priority traffic to meet tight QoS/SLA requirements. — 2004