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IBM Power 750 and 760 Technical Overview and Introduction
Levels of processor capacity resolution
The following two levels of processor capacity resolution are implemented by the POWER
Hypervisor and Multiple shared processor pools:
Level
0
The first level, Level
0
, is the resolution of capacity within the same shared processor pool.
Unused processor cycles from within a shared processor pool are harvested and then
redistributed to any eligible micropartition within the same shared processor pool.
Level
1
This is the second level of processor capacity resolution. When all Level
0
capacity has
been resolved within the multiple shared processor pools, the POWER Hypervisor
harvests unused processor cycles and redistributes them to eligible micropartitions
regardless of the Multiple shared processor pools structure.
Figure 3-9 shows the levels of unused capacity redistribution implemented by the POWER
Hypervisor.
Figure 3-9 The levels of unused capacity redistribution
POWER Hypervisor
SPP
n
SPP
2
SPP
1
SPP
0
Micro-partition
n
SPP
2
capacity
resolution
SPP
n
capacity
resolution
SPP
1
capacity
resolution
SPP
0
capacity
resolution
Physical Shared Processor Pool
p0
p1
p2
p3
p4
p5
Level
1
capacity
resolution
Level
1
capacity resolution
POWER Hypervisor harvests unused
processor capacity from Shared-Processor
Pools and redistributes it across all
uncapped micro-partitions regardless of the
Shared-Processor Pool structure
Level
0
capacity resolution
Resolution of the Entitled Pool Capacity
within the same Shared-Processor Pool
Level
0
capacity
resolution
Micro-partition
0
Micro-partition
1
Micro-partition
2
Micro-partition
3
Micro-partition
n