Dell PowerEdge R930 - Processor Settings

Processor Settings
You can use the Processor Settings screen to view the processor settings, and perform specic functions such as enabling virtualization
technology, hardware prefetcher, and logical processor idling.
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Processor Settings details
System BIOS
Viewing Processor Settings
Viewing Processor Settings
To view the Processor Settings screen, perform the following steps:
1 Turn on, or restart your system.
2 Press F2 immediately after you see the following message:
F2 = System Setup
NOTE: If your operating system begins to load before you press F2, wait for the system to nish booting, and then restart
your system and try again.
3 On the System Setup Main Menu screen, click System BIOS.
4 On the System BIOS screen, click Processor Settings.
Related links
Processor Settings
Processor Settings details
Processor Settings details
The Processor Settings screen details are explained as follows:
Option
Description
Logical Processor Enables or disables the logical processors and displays the number of logical processors. If this option is set to
Enabled, the BIOS displays all the logical processors. If this option is set to Disabled, the BIOS displays only one
logical processor per core. This option is set to Enabled by default.
QPI Speed Enables you to control QuickPath Interconnect data rate settings.
Virtualization
Technology
Enables or disables the additional hardware capabilities provided for virtualization. This option is set to Enabled by
default.
Address Translation
Service (ATS)
Denes the Address Translation Cache (ATC) for devices to cache the DMA transactions. This option provides an
interface between CPU and DMA Memory Management to a chipset's Address Translation and Protection Table to
translate DMA addresses to host addresses. This option is set to Enabled by default.
Adjacent Cache
Line Prefetch
Optimizes the system for applications that need high utilization of sequential memory access. This option is set to
Enabled by default. You can disable this option for applications that need high utilization of random memory
access.
Hardware
Prefetcher
Enables or disables the hardware prefetcher. This option is set to Enabled by default.
DCU Streamer
Prefetcher
Enables or disables the Data Cache Unit (DCU) streamer prefetcher. This option is set to Enabled by default.
DCU IP Prefetcher Enables or disables the Data Cache Unit (DCU) IP prefetcher. This option is set to Enabled by default.
Logical Processor
Idling
Enables you to improve the energy eciency of a system. It uses the operating system core parking algorithm and
parks some of the logical processors in the system which in turn allows the corresponding processor cores to
transition into a lower power idle state. This option can only be enabled if the operating system supports it. It is set
to Disabled by default.
Pre-operating system management applications 47