94.401 Operating Systems

Example: three jobs are submitted

nAlmost no contention for resources

nAll 3 can run in minimum time in a multitasking environment (assuming JOB2/3 have enough CPU time to keep their I/O operations active)

JOB1 JOB2 JOB3

Type of job Heavy compute Heavy I/O Heavy I/O

Duration 5 min. 15 min. 10 min.

Memory req. 50K 100 K 80 K

Need disk? No No Yes

Need terminal No Yes No

Need printer? No No Yes