Page 9 - slides.dvi

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•
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1.
2.
Operating
e.g.
Use
Two
Users
select
Systems
select
—
stage
CTSS,
want
memory
jobs
to
to
Evolution
resident
more
TSO,
job
load:
cache
scheduling:
Multi-Programming
Unix,
to
job
Time
jobs
interaction
run:
VMS,
⇒
from
System
Job 2
Job 4
Job 3
Job 1
Operating
CPU
disk
scheduling.
Windows
⇒
System
Job 2
Job 1
Job 4
Job 3
NT.
Operating
more
.
time-sharing:
scheduling.
.
than
one
System
Job 4
Job 3
Job 1
Job 2
Operating
job
active

simultaneously.
5