a.k.a. �time slice�
A brief period of time during which a given thread executes in a multitasking operating system before it is subject to being rescheduled against other threads at the same priority.
For each process, NT sets limits on certain system resources the process�s threads can use, including quotas for paging-file, paged-pool, and nonpaged-pool usage, etc. For example, the Memory Manager �charges quota� against the process as its threads use page-file, paged-pool, or nonpaged-pool memory; it also updates these values when threads release memory.