oversubscription

A subscription for more than is available.

A multithreading technique involving an extra thread that runs tasks when all other threads are blocked.

This paper explores thread oversubscription, i.e., provisioning more threads than the available cores, to exploit CPU elasticity in the cloud.

The practice of connecting multiple devices to the same switch port in a storage area network.

You can overcome the oversubscription of an ISL by adding an ISL between the switches to increase the bandwidth.