315
FCFS drawbacks
nA process that does not perform any I/O will monopolize the processor
nFavors CPU-bound processes
uI/O-bound processes
have to wait until CPU-bound process
completes
uThey may have to wait even when their I/O are completed (poor device utilization)
uwe could have kept
the I/O devices busy by giving a bit more
priority to I/O bound processes