Page 44 - slides.dvi

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–
–
Operating
run
e.g.
swap
Static
time
job
Systems
partition
IBM
job
associate
—
blocked
problems:
from
on
jobs
sliced:
back
to
Contiguous
to
memory
OS/360
I/O
a
larger
another
disk
job
when
Allocation
MFT,
the
fragmentation
queue
ICL
when:
(assuming
job,
queue
Queue
Blocked
Multiprogramming
installing
I/O
Store
while
Backing
is
larger
(partition
System
OS,
4
the
according
too
Run
Queue
and
slower
to
swapping
time
Main
big),
Store
size.
than
jobs
slice
allocate
the
OS
cannot
Memory
Partitioned
pieces
B
D
C
A
grow
to
backing
store).
(partition
different
too
job
small).
queues.
40