Specifications

94 IBM Flex System p260 and p460 Planning and Implementation Guide
Figure 4-19 shows an example of the output returned by this planning tool. The
tool outputs various real memory and processor resource combinations to
achieve the wanted effective memory and proposes one particular combination.
In this example, the tool proposes to allocate 58% of a processor core, to benefit
from 45% extra memory capacity.
Figure 4-19 Output from the AIX Active Memory Expansion planning tool
For more information about this topic, see the white paper Active Memory
Expansion: Overview and Usage Guide, available at the following website:
http://www.ibm.com/systems/power/hardware/whitepapers/am_exp.html
Active Memory Expansion Modeled Statistics:
-----------------------
Modeled Expanded Memory Size : 8.00 GB
Expansion True Memory Modeled Memory CPU Usage
Factor Modeled Size Gain Estimate
--------- -------------- ----------------- -----------
1.21 6.75 GB 1.25 GB [ 19%] 0.00
1.31 6.25 GB 1.75 GB [ 28%] 0.20
1.41 5.75 GB 2.25 GB [ 39%] 0.35
1.51 5.50 GB 2.50 GB [ 45%] 0.58
1.61 5.00 GB 3.00 GB [ 60%] 1.46
Active Memory Expansion Recommendation:
---------------------
The recommended AME configuration for this workload is to configure the LPAR
with a memory size of 5.50 GB and to configure a memory expansion factor of
1.51. This will result in a memory expansion of 45% from the LPAR's current
memory size. With this configuration, the estimated CPU usage due to Active
Memory Expansion is approximately 0.58 physical processors, and the
estimated overall peak CPU resource required for the LPAR is 3.72 physical
processors.