Memory Settings - IBM x3850 X6 Planning And Implementation Manual

Intel Virtualization Technology (Default: Enable)
This option enables the processor hardware acceleration feature for virtualization. See
"Intel Virtualization Technology" on page 25 for more information.
Enable SMX (Default: Disabled)
This option enables Safer Mode Extensions.
Hardware Prefetcher (Default: Enabled)
This option enables Hardware Prefetcher. Lightly threaded applications and some
benchmarks can benefit from having the Hardware Prefetcher enabled.
Adjacent Cache Prefetcher (Default: Enabled)
This option enables Adjacent Cache Prefetcher. Lightly threaded applications and some
benchmarks can benefit from having the Adjacent Cache Prefetcher enabled.
DCU Streamer Prefetcher (Default: Enabled)
This option enables DCU Streamer Prefetcher. Lightly threaded applications and some
benchmarks can benefit from having the DCU Streamer Prefetcher enabled.
DCU IP Prefetcher (Default: Enabled)
This option enables the DCU IP Prefetcher. This option is typically best left enabled for
most environments. Some environments may benefit from having it disabled (for example,
Java).
Cores in CPU Package (Default: All)
This option sets the number of processor cores to be activated within each CPU package.
You may want to change your CPU cores to lower your power consumption or to meet
software licensing requirements.
QPI Link Frequency (Default: Max Performance)
This option sets the operating frequency of the processor's QPI link:
– Minimal Power provides less performance for better power savings.
– Power Efficiency provides best performance per watt ratio.
– Max performance provides the best system performance.

5.3.3 Memory settings

The Memory settings panel provides the available memory operation options, as shown in
Figure 5-17.
Figure 5-17 UEFI Memory system settings panel
Chapter 5. Preparing the hardware
149