Process Preemption



Ability of an OS to take away CPU control of a process before it does this voluntarily.

Processes are assigned processing time quanta, a process will be preempted when its quantum duration is passed.

Scenario: a high-priority task enters the TASK_RUNNING state while a low-priority task is active --> the low-priority task is preempted

Linux features preemptive processes but not (yet) a preemptive kernel