Optimizing Resource Placement - Dynamic Platform Optimizer; Related Publications - IBM Power7 Optimization And Tuning Manual

Applications do not need to change, and they are not aware that AME is active. However, not
all applications or workloads have suitable characteristics for AME. Here is a partial list of
guidelines for the workload characteristics that can be a good fit for AME:
The memory footprint is dominated by application working storage (such as heap, stack,
and shared memory).
Workload data is compressible.
Memory access patterns are concentrated to a subset of the overall memory footprint.
Workload performance is acceptable without the use of larger page sizes, such as 64 KB
pages. AME disables the usage of large pages and uses only 4 KB pages.
The average CPU usage of the workload is below 60%.
Users of the application and workload are relatively insensitive to response
time increases.
For more information about AME usage, see Active Memory Expansion: Overview and Usage
Guide, available at:
ftp://ftp.software.ibm.com/common/ssi/sa/wh/n/pow03037usen/POW03037USEN.PDF
3.2.5 Optimizing Resource Placement – Dynamic Platform Optimizer
In firmware 760 level and later, on select Power Systems servers, a feature is available called
the Dynamic Platform Optimizer. This optimizer automates the manual steps to improve
resource placement. For more information visit the following Web site and select the Doc-type
Word document P7 Virtualization Best Practice.
https://www.ibm.com/developerworks/wikis/display/WikiPtype/Performance+Monitoring+
Documentation
Comment: This document is intended to address POWER7 processor technology based
PowerVM best practices to attain the best LPAR performance. This document should be
used in conjunction with other PowerVM documents.

3.3 Related publications

The publications that are listed in this section are considered suitable for a more detailed
discussion of the topics that are covered in this chapter:
Active Memory Expansion: Overview and Usage Guide, found at:
ftp://ftp.software.ibm.com/common/ssi/sa/wh/n/pow03037usen/POW03037USEN.PDF
IBM PowerVM Active Memory Sharing Performance, found at:
http://public.dhe.ibm.com/common/ssi/ecm/en/pow03017usen/POW03017USEN.PDF
IBM PowerVM Virtualization Introduction and Configuration, SG24-7940
IBM PowerVM Virtualization Managing and Monitoring, SG24-7590
POWER7 Virtualization Best Practice Guide, found at:
https://www.ibm.com/developerworks/wikis/download/attachments/53871915/P7_virtu
alization_bestpractice.doc?version=1
PowerVM Migration from Physical to Virtual Storage, SG24-7825
Chapter 3. The POWER Hypervisor
65