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Levels Tought:
Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
| Last Sign in: | 408 Weeks Ago, 2 Days Ago |
| Questions Answered: | 66690 |
| Tutorials Posted: | 66688 |
MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
What is the difference between preemptive scheduling and non-preemptive scheduling? What is the issue with the latter? Pre-emptive scheduling is based on timer interrupts, where a running thread may be interrupted by the OS and switched to the ready state at will (usually if something more important comes through) or when it has exceeded its timing allocation. Non-preemptive scheduling means once a thread is in the running state, it continues until it completes, or at least gives up the CPU voluntarily. Threads that do this are likely to monopolise the CPU.
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