nSelects from among the processes in memory
that are ready to execute, and allocates the CPU to one of them
n
nCPU scheduling decisions may take place
when a process:
1. Switches
from running to waiting state
2. Switches
from running to ready state
3. Switches
from waiting to ready
4.Terminates
●
nScheduling under 1 and 4 is nonpreemptive
n
nAll other scheduling is preemptive
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