Chapter 2
Installation and Configuration
NI PXI-8119 User Manual
2-8
ni.com
•
C-States
—This setting enables or disables CPU power management.
The default value is
Enabled
. Enabling C-States allows the processor
to put idle CPU cores to sleep, allowing active cores to run at higher
than base frequencies when Turbo Boost is enabled. Enabling C-States
can increase application jitter, so care should be taken when enabling
this setting on a Real Time system. When the BIOS is configured to
boot LabVIEW Real-time, C-States will be automatically disabled. In
order to manually enable C-States when in LabVIEW Real-Time
mode, see the
LabVIEW RT Configuration Overrides Submenu
.
•
Hardware Prefetcher
—This setting enables or disables CPU cache
hardware prefetching. The default value is
Enabled
. Enabling
hardware prefetching can increase system performance for some
applications, but can cause control algorithms to behave less
deterministically.
•
Adjacent Cache Line Prefetch
—This setting enables or disables
prefetching of adjacent cache lines from memory to the CPU cache.
The default value is
Enabled
. Enabling adjacent cache line prefetching
can increase system performance for some applications, but can cause
control algorithms to behave less deterministically.
Video Configuration Submenu
Use this submenu to apply alternate settings to the video configuration.
Normally, you do not need to modify these settings, as the factory default
settings provide the most compatible and optimal configuration possible.
•
Primary Display
—This setting specifies which video adapter the
BIOS should use as the primary adapter if more than one is present.
To use an external video adapter as the primary graphics adapter,
choose
Add-in Board Video
. To disable the primary graphics adapter,
choose
Disabled
. The default value is
Onboard Video
.
ExpressCard Configuration Submenu
Use this submenu to apply alternate settings to the ExpressCard
configuration. These settings determine how much memory space,
I/O space, and PCI bus numbers will be pre-allocated for the
ExpressCard port, allowing non-PCI Express-aware operating systems to
support hot-plugging ExpressCard devices. Normally, you do not need to
modify these settings, as the factory default settings provide the most
compatible and optimal configuration possible.
•
ExpressCard Resources
—This setting enables or disables the setting
of the
Reserved Buses
,
Reserved Memory
, and
Reserved I/O
settings. The default value for this setting is
Enabled
. If this setting is
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