Feedback Queue Definition/Meaning:
A form of scheduling mechanism often used in multiaccess systems.
Individual processes are allocated a quantum of time on the processor. A process once started is allowed to run
until it has exhausted its quantum, until it initiates a transfer on a
peripheral device, nr until an interrupt generated by some other process occurs.
If the quantum is exhausted, the process is assigned a longer quantum and
rejoins the queue. If the process initiates a transfer, its quantum remains
unaltered and it rejoins the queue. If an externally generated interrupt occurs,
the interrupt is serviced. Servicing the interrupt may free some other process
already in the queue, in which case that process may be preferentially
restarted.
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