DescriptionName
Whetherthe processor fetches cache linesin even/oddpairs
insteadof fetching just the required line. This can be one of the
following:
•Disabled—Theprocessor only fetches the requiredline.
•Enabled—Theprocessor fetches both the requiredline
andits paired line.
AdjacentCache Line Prefetcher
Whetherthe processor uses the DCU IP Prefetch mechanism to
analyzehistorical cache access patterns andpreload themost
relevantlines in the L1 cache. This can be one of the following:
•Disabled—Theprocessor does not try to anticipate cache
readrequirements and only fetches explicitly requested
lines.
•Enabled—TheDCU prefetcher analyzes the cacheread
patternand prefetches the next line in the cache if it
determinesthat it maybe needed.
DCUStreamer Prefetch
Whetherthe processor uses the DCU IP Prefetch mechanism to
analyzehistorical cache access patterns andpreload themost
relevantlines in the L1 cache. This can be one of the following:
•Disabled—Theprocessor does not preload any cache data.
•Enabled—TheDCU IP prefetcher preloads the L1 cache
withthe data it determines to be the most relevant.
DCUIP Prefetcher
Allowsprocessors to increase I/O performance by placing data
fromI/O devices directly into the processor cache. This setting
helpsto reduce cache misses. This can be one of the following:
•Disabled—Datafrom I/O devices is not placed directly
intothe processor cache.
•Enabled—Datafrom I/O devicesis placed directlyinto
theprocessor cache.
DirectCache Access Support
Cisco UCS C-Series Servers Integrated Management Controller CLI Configuration Guide, Release 1.5
238 OL-28893-01
BIOS Parameters by Server Model
Advanced BIOS Parameters for C420 Servers