User's Manual

DescriptionName
Whether the processor supports Intel VT-d Coherency. This can
be one of the following:
• Disabled—The processor does not support coherency.
• Enabled—The processor uses VT-d Coherency as
required.
Intel VT-d Coherency Support
Whether the processor supports Intel VT-d Address Translation
Services (ATS). This can be one of the following:
• Disabled—The processor does not support ATS.
• Enabled—The processor uses VT-d ATS as required.
Intel VT-d ATS Support
Sets the CPU performance profile for the server. The
performance profile consists of the following options:
•
Data Reuse Optimization
•
DCU Streamer Prefetcher
•
DCU IP Prefetcher
•
Hardware Prefetcher
•
Adjacent Cache-Line Prefetch
This can be one of the following:
• Enterprise—Only the DCU IP Prefetcher is enabled. The
rest of the options are disabled.
• —All options are enabled.
• HPC—Data Reuse Optimization is disabled and all other
options are enabled. This setting is also known as high
performance computing.
• Custom—All performance profile options can be
configured from the BIOS setup on the server. In addition,
the Hardware Prefetcher and Adjacent Cache-Line Prefetch
options can be configured in the fields below.
CPU Performance
Whether the processor allows the Intel hardware prefetcher to
fetch streams of data and instruction from memory into the
unified second-level cache when necessary. This can be one of
the following:
• Disabled—The hardware prefetcher is not used.
• Enabled—The processor uses the hardware prefetcher
when cache issues are detected.
Hardware Prefetcher
Cisco UCS C-Series Servers Integrated Management Controller CLI Configuration Guide, Release 1.5
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BIOS Parameters by Server Model
Advanced BIOS Parameters for C420 Servers