Supermicro SuperServer 2029UZ-TN20R25M User Manual page 78

SuperServer 2029UZ-TN20R25M User's Manual
Execute Disable Bit (Available if supported by the OS & the CPU)
Select Enable to enable Execute Disable Bit support which will allow the processor to
designate areas in the system memory where an application code can execute and where
it cannot, thus preventing a worm or a virus from flooding illegal codes to overwhelm the
processor, damaging the system during a virus attack. The options are Disable and Enable.
(Refer to Intel and Microsoft websites for more information.)
Intel Virtualization Technology
Select Enable to use Intel Virtualization Technology which will allow the I/O device assignments
to be directly reported to the VMM (Virtual Memory Management) through the DMAR ACPI
tables. This feature offers fully-protected I/O resource-sharing across the Intel platforms,
providing the user with greater reliability, security and availability in networking and data-
sharing. The settings are Disable and Enable.
PPIN Control
Select Unlock/Enable to use the Protected-Processor Inventory Number (PPIN) in the system.
The options are Unlock/Disable and Unlock/Enable.
Hardware Prefetcher (Available when supported by the CPU)
If this feature is set to Enable, the hardware prefetcher will prefetch streams of data and
instructions from the main memory to the Level 2 (L2) cache to improve CPU performance.
The options are Enable and Disable.
Adjacent Cache Prefetch (Available when supported by the CPU)
Select Enable for the CPU to prefetch both cache lines for 128 bytes as comprised. Select
Disable for the CPU to prefetch both cache lines for 64 bytes. The options are Enable and
Disable.
Note: Please power off and reboot the system for the changes you've made to take
effect. Please refer to Intel's website for detailed information.
DCU Streamer Prefetcher (Available when supported by the CPU)
If this item is set to Enable, the DCU (Data Cache Unit) streamer prefetcher will prefetch data
streams from the cache memory to the DCU (Data Cache Unit) to speed up data accessing
and processing for CPU performance enhancement. The options are Enable and Disable.
DCU IP Prefetcher
If this item is set to Enable, the IP prefetcher in the DCU (Data Cache Unit) will prefetch IP
addresses to improve network connectivity and system performance. The options are Enable
and Disable.
LLC Prefetch
If this feature is set to Enable, LLC (hardware cache) prefetching on all threads will be
supported. The options are Disable and Enable.
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