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| JOB1 JOB2 JOB3 |
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| Type
of job Heavy compute Heavy I/O Heavy
I/O |
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| Duration
5 min. 15 min. 10 min. |
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| Memory
req. 50K 100 K 80 K |
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| Need
disk? No No Yes |
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| Need terminal No Yes No |
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| Need
printer? No No Yes |
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| n | Almost no
contention for resources |
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| n | All 3 can run
in minimum time in a multitasking |
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| environment
(assuming JOB2/3 have enough CPU |
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| time to keep
their I/O operations active) |
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