1. System Utilities
Express5800/R120h-1M, R120h-2M Maintenance Guide
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Chapter 2 Useful Features
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Processor Options Menu
When you select
System Configuration
>
BIOS/Platform Configuration (RBSU)
>
Processor Options
from
the System Utilities, the
Processor Options
menu appears.
For details about the options, see the table below.
Option
Parameter Description
Intel(R)
Hyper-Threading
Disabled
[Enabled]
Use this option to enable or disable Intel
Hyper-Threading. When enabled, each physical
processor core operates as two logical processor cores.
When disabled, each physical processor core operates
as one logical processor core. Enabling this option can
improve overall performance for applications that benefit
from a higher processor core count.
This appears only when the processor that supports this
function is mounted. This option is displayed only when
the installed processor supports this feature.
Enabled Cores per
Processor
[0]-X
This option enables limiting the number of enabled
processor cores per physical processor. You can set the
number of enabled cores to a value supported by the
physical processor. Setting the value to 0 or a value
larger than the number of supported cores of the
installed processor will result in all processor cores in the
socket being enabled.
Processor x2APIC
Support
[Enabled]
Force Enabled
Disabled
x2APIC support enables operating systems to run more
efficiently on high core count configurations. It also
optimizes interrupt distribution in virtualized
environments. In most cases, set this option to enabled.
This configures the operating system to optionally enable
x2APIC support when it loads. Some older hypervisors
and operating systems might have issues with optional
x2APIC support, in which case disabling x2APIC might
be necessary to address those issues. Additionally,
some hypervisors and operating systems will not use
X2APIC unless this option is set to Force Enabled prior
to booting. The Force Enabled option also causes the
Intel(R) VT-d setting to be set to enabled.
[ ]: Default setting