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Chapter 7: BIOS
7-7
Hardware Prefetcher (Available when supported by the CPU)
If set to Enable, the hardware prefetcher will prefetch streams of data and instruc-
tions from the main memory to the L2 cache to improve CPU performance. The
options are Disable and
Enable .
Adjacent Cache Line 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 Disable and
Enable .
Note : Please reboot the system for changes on this setting to take effect.
Please refer to Intel’s website for detailed information.
DCU (Data Cache Unit) Streamer Prefetcher (Available when supported by
the CPU)
If set to Enable, the DCU Streamer Prefetcher will prefetch data streams from the
cache memory to the DCU (Data Cache Unit) to speed up data accessing and
processing to enhance CPU performance. The options are Disable and
Enable .
DCU IP Prefetcher
If 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.
DCU Mode
Use this feature to set the data-prefecting mode for the DCU (Data Cache Unit).
The options are
32KB 8Way Without ECC and 16KB 4Way With ECC.
Direct Cache Access (DCA)
Select Enable to use Intel DCA (Direct Cache Access) Technology to improve the
efficiency of data transferring and accessing. The options are Auto , Enable, and
Disable.
DCA Prefetch Delay
A DCA Prefetcher is used with a TOE (TCP/IP Offload Engine) adapter to prefetch
data in order to shorten execution cycles and maximize data processing efficiency.
Prefetching data too frequently can saturate the cache directory and delay neces-
sary cache access. This feature reduces or increases the frequency the system
prefetches data. The options are Disable, [8], [16], [24],
[32] , [40], [48], [56], [64],
[72], [80], [88], [96], [104], [112].