Dell PowerEdge E31S Series Owner's Manual page 51

Viewing Processor Settings
To view the Processor Settings screen, perform the following steps:
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 finish 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 references
Processor Settings on page 50
Processor Settings details
Processor Settings details
About this task
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.
Alternate RTID Modifies Requestor Transaction IDs, which are QPI resources. This option is set to Disabled by default.
(Requestor
Transaction ID)
Setting
Virtualization Enables or disables the additional hardware capabilities provided for virtualization. This option is set to
Technology Enabled by default.
Address Defines the Address Translation Cache (ATC) for devices to cache the DMA transactions. This option
Translation provides an interface between CPU and DMA Memory Management to a chipset's Address Translation
Service (ATS) and Protection Table to translate DMA addresses to host addresses. This option is set to Enabled by
default.
Adjacent Cache Optimizes the system for applications that need high utilization of sequential memory access. This option
Line Prefetch is set to Enabled by default. You can disable this option for applications that need high utilization of
random memory access.
Hardware Enables or disables the hardware prefetcher. This option is set to Enabled by default.
Prefetcher
DCU Streamer Enables or disables the Data Cache Unit (DCU) streamer prefetcher. This option is set to Enabled by
Prefetcher default.
DCU IP Enables or disables the Data Cache Unit (DCU) IP prefetcher. This option is set to Enabled by default.
Prefetcher
Execute Disable Enables you to run the disable memory protection technology. This option is set to Enabled by default.
Logical Processor Enables you to improve the energy efficiency of a system. It uses the operating system core parking
Idling algorithm and parks some of the logical processors in the system which in turn allows the corresponding
on page 51
NOTE: Enabling this option may negatively impact the overall system performance.
Pre-operating system management applications 51