Turbo Boost
set intel-turbo-boost-config
turbo-boost
|
Whether
the processor uses Intel Turbo Boost Technology, which allows the processor to
automatically increase its frequency if it is running below power, temperature,
or voltage specifications. This can be one of the following:
-
disabled—The processor does not increase its
frequency automatically.
-
enabled—The processor utilizes Turbo Boost
Technology if required.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
Enhanced Intel Speedstep
set
enhanced-intel-speedstep-config speed-step
|
Whether
the processor uses Enhanced Intel SpeedStep Technology, which allows the system
to dynamically adjust processor voltage and core frequency. This technology can
result in decreased average power consumption and decreased average heat
production. This can be one of the following:
-
disabled—The processor never dynamically adjusts its
voltage or frequency.
-
enabled—The processor utilizes Enhanced Intel
SpeedStep Technology and enables all supported processor sleep states to
further conserve power.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure the
operating system supports this feature.
|
Hyper Threading
set hyper-threading-config
hyper-threading
|
Whether
the processor uses Intel Hyper-Threading Technology, which allows multithreaded
software applications to execute threads in parallel within each processor.
This can be one of the following:
-
disabled—The processor does not permit
hyperthreading.
-
enabled—The processor allows for the parallel
execution of multiple threads.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure the
operating system supports this feature.
|
Core Multi Processing
set
core-multi-processing-config multi-processing
|
Sets the
state of logical processor cores in a package. If you disable this setting,
Hyper Threading is also disabled. This can be one of the following:
-
all—Enables multi processing on all logical
processor cores.
-
1 through
10—Specifies the number of logical processor cores
that can run on the server. To disable multi processing and have only one
logical processor core running on the server, select 1.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure the
operating system supports this feature.
|
Execute Disabled Bit
set execute-disable
bit
|
Classifies memory areas on the server to specify where where
application code can execute. As a result of this classification, the processor
disables code execution if a malicious worm attempts to insert code in the
buffer. This setting helps to prevent damage, worm propagation, and certain
classes of malicious buffer overflow attacks. This can be one of the following:
-
disabled—The processor does not classify memory
areas.
-
enabled—The processor classifies memory areas.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure the
operating system supports this feature.
|
Virtualization Technology (VT)
set intel-vt-config
vt
|
Whether
the processor uses Intel Virtualization Technology, which allows a platform to
run multiple operating systems and applications in independent partitions. This
can be one of the following:
-
disabled—The processor does not permit
virtualization.
-
enabled—The processor allows multiple operating
systems in independent partitions.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
Note
|
If you
change this option, you must power cycle the server before the setting takes
effect.
|
|
Direct Cache Access
set
direct-cache-access-config access
|
Allows
processors to increase I/O performance by placing data from I/O devices
directly into the processor cache. This setting helps to reduce cache misses.
This can be one of the following:
-
disabled—Data from I/O devices is not placed
directly into the processor cache.
-
enabled—Data from I/O devices is placed directly
into the processor cache.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
Processor C State
set
processor-c-state-config
c-state
|
Whether
the system can enter a power savings mode during idle periods. This can be one
of the following:
-
disabled—The system remains in high performance
state even when idle.
-
enabled—The system can reduce power to system
components such as the DIMMs and CPUs.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
We
recommend that you contact your operating system vendor to make sure the
operating system supports this feature.
|
Processor C1E
set
processor-c1e-config
c1e
|
Allows
the processor to transition to its minimum frequency upon entering C1. This
setting does not take effect until after you have rebooted the server. This can
be one of the following:
-
disabled—The CPU continues to run at its maximum
frequency in C1 state.
-
enabled—The CPU transitions to its minimum
frequency. This option saves the maximum amount of power in C1 state.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
Processor C3 Report
set
processor-c3-report-config processor-c3-report
|
Whether
the processor sends the C3 report to the operating system. This can be one of
the following:
-
disabled—The processor does not send the C3 report.
-
acpi-c2—The processor sends the C3 report using the
ACPI C2 format.
-
acpi-c3—The processor sends the C3 report using the
ACPI C3 format.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
On the
B440 server, the BIOS Setup menu uses enabled and disabled for these options.
If you specify acpi-c2 or acpi-c2, the server sets the BIOS value for that
option to enabled.
|
Processor C6 Report
set
processor-c6-report-config processor-c6-report
|
Whether
the processor sends the C6 report to the operating system. This can be one of
the following:
-
disabled—The processor does not send the C6 report.
-
enabled—The processor sends the C6 report.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
Processor C7 Report
set
processor-c7-report-config processor-c7-report
|
Whether
the processor sends the C7 report to the operating system. This can be one of
the following:
-
disabled—The processor does not send the C7 report.
-
enabled—The processor sends the C7 report.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
CPU Performance
set cpu-performance-config
cpu-performance
|
Sets the
CPU performance profile for the server. This can be one of the following:
-
enterprise—For M3 servers, all prefetchers and data
reuse are enabled. For M1 and M2 servers, data reuse and the DCU IP prefetcher
are enabled, and all other prefetchers are disabled.
-
high-throughput—Data reuse and the DCU IP prefetcher
are enabled, and all other prefetchers are disabled.
-
hpc—All prefetchers are enabled and data reuse is
disabled. This setting is also known as high performance computing.
|
Max Variable MTRR Setting
set
max-variable-mtrr-setting-config
processor-mtrr
|
Allows
you to select the number of MTRR variables. This can be one of the following:
-
auto-max—The BIOS uses the default value for the
processor.
-
8—The BIOS uses the number specified for the
variable MTRR.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|
Local X2 APIC
set
local-x2-apic-config
|
Allows you to set the type of APIC architecture. This can be one of the following:
xapic—Uses the standard xAPIC architecture.
x2apic—Uses the enhanced x2APIC architecture to support 32 bit addressability of processors.
auto—Automatically uses the xAPIC architecture that is detected.
-
platform-default—The
BIOS uses the value for this attribute contained in the BIOS defaults for the
server type and vendor.
|