Table of Contents
Advertisement
Unused capacity in SPP
redistributed to uncapped
micro-partitions within SPP
Shared Processor Pool
Set of micro-partitions
AIX V5.3
AIX V6.1
EC 1.6
EC 0.8
vp1
vp0
vp2
p0
p1
Figure 3-6 Overview of the architecture of Multiple Shared-Processor Pools
Micro-partitions are created and then identified as members of either the default
Shared-Processor Pool
0
that exist within the set of micro-partitions are monitored by the POWER Hypervisor and
processor capacity is managed according to user-defined attributes.
If the Power Systems server is under heavy load, each micro-partition within a
Shared-Processor Pool is guaranteed its processor entitlement plus any capacity that it can
be allocated from the Reserved Pool Capacity if the micro-partition is uncapped.
If certain micro-partitions in a Shared-Processor Pool do not use their capacity entitlement,
the unused capacity is ceded and other uncapped micro-partitions within the same
Shared-Processor Pool are allocated the additional capacity according to their uncapped
weighting. In this way, the Entitled Pool Capacity of a Shared-Processor Pool is distributed to
the set of micro-partitions within that Shared-Processor Pool.
All Power Systems servers that support the Multiple Shared-Processor Pools capability will
have a minimum of one (the default) Shared-Processor Pool and up to a maximum of 64
Shared-Processor Pools.
Default Shared-Processor Pool (SPP
On any Power Systems server supporting Multiple Shared-Processor Pools, a default
Shared-Processor Pool is always automatically defined. The default Shared-Processor Pool
has a pool identifier of zero (SPP-ID = 0) and can also be referred to as SPP
Shared-Processor Pool has the same attributes as a user-defined Shared-Processor Pool
except that these attributes are not directly under the control of the system administrator; they
have fixed values (Table 3-5).
is
0
0
0
Linux
AIX V6.1
EC 0.5
EC 1.6
vp4
vp3
vp5
p2
p3
p4
p5
Physical Shared-Processor Pool
or a user-defined Shared-Processor Pool
)
0
Unused capacity in SPP
1
redistributed to uncapped
micro-partitions within SPP
Shared Processor Pool
Set of micro-partitions
AIX V6.1
EC 0.8
vp7
vp6
vp8
POWER Hypervisor
KEY:
p6
p7
EC
Entitled Capacity
p
Physical processor
vp
Virtual processor
SPPn Shared-Processor Pool
. The virtual processors
n
Chapter 3. Virtualization
is
1
1
Linux
EC 0.5
vp10
vp9
n
. The default
0
103
Advertisement
Table of Contents
