IBM X3850 X6 User Manual

144 IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide
Table 5-1 provides an overview of the most common UEFI performance optimizing settings
and their default state.
Table 5-1 UEFI default settings
Tuning the x3850 X6 server for performance is a complicated topic, because it depends on
which application you have installed or which workload this application generates. For
example, a database server will generate a different load on the hardware than a file and print
server.
In this section, we provide general settings for the x3850 X6 that can be a good starting point
for performance tuning.
Table 5-2 Overview of UEFI settings for specific performance
UEFI value Default setting
Processor settings
Turbo Mode (Intel Turbo Boost) Enabled
Processor Performance States Enabled
CPU C-States Enabled
C1 Enhanced Mode Enabled
Hyper-Threading Enabled
Execute Disable Bit Enabled
Intel Virtualization Technology Enabled
QPI Link Frequency Max Performance
Memory Settings
Memory Speed Max Performance
Patrol Scrub Enabled
Memory Data Scrambling Enabled
Advanced RAS
Machine Check Recovery Enabled
PCI Live Error Recovery Enabled
Setting Maximum
performance
Virtualization
a
Low latency Performance
per watt
HPC
TurboMode
b
Enabled Enabled Disabled Disable Disabled
C states Disabled
Enabled Disabled Enabled Enabled
C1 Enhanced Mode Disabled
Enabled Disabled Enabled Enabled
Prefetcher
Enabled Enabled Enabled Enabled Enabled
Hyper-Threading
Enabled Enabled Disabled Enabled Enabled
Execute Disable Disabled
Enabled Disabled Enabled Disabled
Virtualization
extensions
Disabled
Enabled Disabled Enabled Disabled

IBM X3850 X6 Specifications

General

Brand	IBM
Model	X3850 X6
Category	Server
Language	English