Operating system scheduling algorithms round-robin priority scheduling algorithm multilevel feedback queue scheduling algorithm

Sharing operating system:


When the time slice is 5 times

real-time operating system: priority scheduling algorithm is
non-preemptive

preemptive priority scheduling algorithm: a new process to determine what the time is not to seize


only the first stage queue so run over only the CPU 2 to the second stage queue , P2 in the second stage of queues after a running time slice
P3 reaches the first stage queue, then flew P2 is not running, to re-enter the second stage queue is a first level queue to run