Dell E05B001 Podręcznik referencyjny - Strona 11

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Option

Description

DCU IP

Enables or disables the Data Cache Unit (DCU) IP prefetcher. This option is set to Enabled by default.

Prefetcher

Sub NUMA

Sub NUMA Clustering (SNC) is a feature for breaking up the LLC into disjoint clusters based on address

Cluster

range, with each cluster bound to a subset of the memory controllers in the system. It improves average

latency to the LLC. Enables or disables the Sub NUMA Cluster. This option is set to Disabled by default.

UPI Prefetch

Enables you to get the memory read started early on DDR bus. The Ultra Path Interconnect (UPI) Rx path

spawns the speculative memory read to Integrated Memory Controller (iMC) directly. This option is set to

Enabled by default.

LLC Prefetch

Enables or disables the LLC Prefetch on all threads. This option is set to Disabled by default.

Dead Line LLC

When enabled, it opportunistically fill dead lines in LLC. When disabled, it never fill dead lines in LLC. This

Alloc

option is set to Enabled by default.

Directory AtoS

AtoS optimization reduces remote read latencies for repeat read accesses without intervening writes.

This option is set to Disabled by default.

FastGo

Enables you to select CR OOS Configuration Profiles.

IRQ Throttle

Enables you to throttle local requests that are targeting a remote address.

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

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.

Configurable TDP Enables you to configure the TDP level. The available options are Nominal, Level 1 and Level 2. This

option is set to Nominal by default.

x2APIC Mode

Enables or disables the x2APIC mode. This option is set to Enabled by default.

L2 RFO Prefetch

Enables or disables the L2 RFO (Read For Ownership) prefetch. This option is set to Enabled by default.

The RFO is the process of reading a cache line from the memory into the cache before it can be written

to.

Dell Controlled

Controls the turbo engagement. Enable this option only when System Profile is set to Performance.

Turbo

Dell AVX Scaling

Enables you to configure the Dell AVX scaling technology. This option is set to 0 by default.

Technology

AVX ICCP Pre-

Allows the system to select between different AVX ICCP transition levels offered by Intel. The default

Grant

level is 128 Heavy.

Number of Cores

Controls the number of enabled cores in the processor. Under certain circumstances, you may see limited

per Processor

performance improvements to Intel Turbo Boost Technology and benefits from potentially larger shared

caches, when you reduce the number of enabled cores. Most computing environments tend to benefit

more from larger number of processing cores, so you must carefully weigh the disabling of cores to gain

nominal performance enhancements.

Process Core

Displays the core speed of the processor(s).

Speed

Process Bus

Displays the bus speed of the processor(s).

Speed

Processor n

The following settings are displayed for each processor installed in the system:

NOTE:

This feature is not supported if CPU Power Management is set to Maximum Performance.

NOTE:

This option is only available on certain stock keeping units (SKUs) of the processors.

NOTE:

This feature is supported only when four processors are installed.

NOTE:

Depending on the number of installed CPUs, there might be up to four processor listings.

BIOS and UEFI