1/10
or
more
of
one
physical
CP.
Typically,
PR/SM
LPAR
will
manage
processing
weights
to
within
1%
of
the
LP’s
physical
CP
share.
See
v
For
LPs
without
processor
resource
capping,
PR/SM
LPAR
enforces
the
processing
weights
to
within
3.6%
of
the
LP’s
physical
CP
share
for
logical
CPs
entitled
to
1/2
or
more
of
one
physical
CP.
Typically,
PR/SM
LPAR
will
manage
the
processing
weights
to
within
1%
of
the
LP’s
physical
CP
share.
See
v
If
a
logical
CP
falls
outside
the
enforceable
ranges
for
logical
CPs
entitled
to
less
than
1/10
of
a
physical
CP
using
capping
or
less
than
1/2
of
a
physical
CP
not
using
capping,
PR/SM
LPAR
enforces
the
processing
weights
to
within
3.6%
of
the
total
capacity
of
the
shared
physical
CP
resources.
However,
PR/SM
LPAR
should
typically
manage
the
processing
weights
to
within
1%
accuracy.
v
Unused
CP
cycles
to
which
a
logical
CP
is
entitled
are
made
available
to
other
logical
CPs
in
proportion
to
the
weights
set
for
the
other
logical
CPs.
v
An
uncapped
coupling
facility
LP
with
shared
CPs
and
coupling
facility
channels
defined
honors
its
processing
weight
up
to
a
point.
PR/SM
LPAR
attempts
to
help
ensure
that
each
logical
CP
defined
to
a
coupling
facility
LP
gets
at
least
1
run
time
interval
of
service
per
every
100
milliseconds.
For
example,
for
a
typical
12.5
millisecond
run
time
interval,
each
logical
CP
gets
1/8th
of
a
physical
CP.
Processing
Weight
Management
Examples
For
the
formulas
used
in
the
following
two
examples,
see
Example
1.
With
Processor
Resource
Capping:
In
the
following
example:
v
Six
physical
CPs
are
online
v
All
LPs
are
capped
v
All
LPs
have
sufficient
workload
demand
to
use
their
shares
Table
3-3.
PR/SM
LPAR
Processor
Weight
Management
with
Processor
Resource
Capping
LP
LCPs
Online
Weight
(1)
Weight
per
LCP
LCP
%
of
PCP
3.6%
Share
3.6%
Total
Resulting
Weight
Range
Resulting
Utilization
Range
A
6
500
83.3
50
3.0
–
80.3–86.3
48.2%–51.8%
B
3
480
160.0
96
5.8
–
154.2–165.3
46.3%–49.7%
C(2)
C(3)
3
20
6.7
4
0.2
–
12
6.5–6.9
0.0–18.7
2.0%–
2.1%
0.0%–
5.6%
Total
Capacity
of
the
Shared
PCP
Resources
1000
/
6
PCPs
=
166.7
=
PCP
capacity
Legend:
LCP
Logical
CP
PCP
Physical
CP
Notes:
1.
Use
the
Customize/Delete
Activation
Profiles
task
available
from
the
CPC
Operational
Customization
tasks
list
to
open
a
reset
or
image
profile
to
set
the
processing
weight
for
an
LP.
The
Processing
weight
field
is
located
on
the
Processor
page
for
the
LP.
2.
The
logical
CPs
for
LP
C
(2)
fall
outside
the
enforceable
range
because
each
logical
CP’s
share
is
only
4%
of
a
physical
CP.
3.
The
LP’s
range
is
bounded
by
the
line
shown
for
LP
C
(3).
Typically,
though,
even
this
configuration
will
see
results
comparable
to
the
line
shown
for
LP
C
(2).
3-40
PR/SM
Planning
Guide
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