User's Manual

DescriptionName
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
Whether the processor fetches cache lines in even/odd pairs
instead of fetching just the required line. This can be one of the
following:
• Disabled—The processor only fetches the required line.
• Enabled— The processor fetches both the required line
and its paired line.
Adjacent Cache Line Prefetcher
Cisco UCS C-Series Servers Integrated Management Controller CLI Configuration Guide, Release 1.5
186 OL-28893-01
BIOS Parameters by Server Model
Advanced BIOS Parameters for C22 and C24 Servers