<s>
Micro-Partitioning	B-Device
is	O
a	O
form	O
of	O
logical	B-Device
partitioning	I-Device
which	O
was	O
introduced	O
by	O
IBM	O
on	O
systems	O
using	O
the	O
POWER5	B-Device
processor	O
,	O
and	O
is	O
also	O
referred	O
to	O
as	O
a	O
shared	O
processor	O
partition	B-Device
,	O
and	O
only	O
differs	O
from	O
a	O
dedicated	O
processor	O
partition	B-Device
in	O
the	O
way	O
CPU	O
utilization	O
is	O
configured	O
and	O
managed	O
by	O
the	O
POWER	O
Hypervisor	O
(	O
PHYP	O
)	O
.	O
</s>
<s>
All	O
IBM	O
POWER5	B-Device
and	O
POWER6	B-Device
systems	O
are	O
partitioned	O
and	O
will	O
run	O
"	O
on	O
top	O
"	O
of	O
the	O
PHYP	O
.	O
</s>
<s>
The	O
POWER	O
Hypervisor	O
controls	O
time	O
slicing	O
,	O
management	O
of	O
all	O
hardware	O
interrupts	O
,	O
dynamic	O
movement	O
of	O
resources	O
across	O
multiple	O
operating	O
systems	O
,	O
and	O
dispatching	O
of	O
logical	B-Device
partition	I-Device
workloads	O
.	O
</s>
<s>
When	O
a	O
shared	O
processor	O
partition	B-Device
is	O
activated	O
by	O
the	O
PHYP	O
,	O
the	O
LPAR	B-Device
is	O
guaranteed	O
a	O
certain	O
processing	O
capacity	O
,	O
if	O
needed	O
,	O
and	O
a	O
number	O
of	O
virtual	O
processors	O
,	O
based	O
on	O
configuration	O
and	O
current	O
availability	O
.	O
</s>
<s>
The	O
minimum	O
processing	O
capacity	O
per	O
processor	O
is	O
1/10	O
of	O
a	O
physical	O
processor	O
core	O
,	O
with	O
a	O
further	O
granularity	O
of	O
1/100	O
,	O
and	O
the	O
PHYP	O
uses	O
a	O
10	O
ms	O
time	O
slicing	O
dispatch	O
window	O
for	O
scheduling	O
all	O
shared	O
processor	O
partitions	B-Device
 '	O
virtual	O
processor	O
queues	O
to	O
the	O
PHYP	O
physical	O
processor	O
core	O
queues	O
.	O
</s>
<s>
A	O
shared	O
processor	O
partition	B-Device
can	O
be	O
either	O
capped	O
or	O
uncapped	O
.	O
</s>
<s>
A	O
capped	O
partition	B-Device
can	O
never	O
exceed	O
the	O
currently	O
configured	O
processing	O
capacity	O
,	O
whereas	O
an	O
uncapped	O
partition	B-Device
can	O
exceed	O
the	O
currently	O
configured	O
processing	O
capacity	O
up	O
to	O
100%	O
of	O
the	O
number	O
of	O
the	O
currently	O
configured	O
virtual	O
processors	O
.	O
</s>
<s>
If	O
the	O
shared	O
processor	O
partition	B-Device
is	O
DLPAR	B-Device
capable	O
,	O
the	O
number	O
of	O
virtual	O
processors	O
and	O
processing	O
capacity	O
can	O
be	O
altered	O
dynamically	O
for	O
the	O
partition	B-Device
.	O
</s>
