© Thomas
Kunz 2000
SCE 574
174
Example:
Three Jobs Submitted
ä
Almost no contention for resources
ä
All 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