Intel P4000RP Technical Product Specification - Page 123

DCU Data Prefetcher

Page 123 highlights

Intel® Server Board S1200V3RP BIOS Setup Interface MLC Streamer is a speculative prefetch unit within the processor(s). Note: Modifying this setting may affect performance. Comments: MLC Streamer is normally Enabled, for best efficiency in L2 Cache and Memory Channel use but disabling it may improve performance for some processing loads and on certain benchmarks. Back to [Advanced Screen] - [Screen Map] 24. MLC Spatial Prefetcher Option Values: Enabled Disabled Help Text: [Enabled] - Fetches adjacent cache line (128 bytes) when required data is not currently in cache. [Disabled] - Only fetches cache line with data required by the processor (64 bytes). Comments: MLC Spatial Prefetcher is normally Enabled, for best efficiency in L2 Cache and Memory Channel use but disabling it may improve performance for some processing loads and on certain benchmarks. Back to [Advanced Screen] - [Screen Map] 25. DCU Data Prefetcher Option Values: Enabled Disabled Help Text: The next cache line will be prefetched into L1 data cache from L2 or system memory during unused cycles if it sees that the processor core has accessed several bytes sequentially in a cache line as data. [Disabled] - Only fetches cache line with data required by the processor (64 bytes). Comments: DCU Data Prefetcher is normally Enabled, for best efficiency in L1 Data Cache and Memory Channel use but disabling it may improve performance for some processing loads and on certain benchmarks. Back to [Advanced Screen] - [Screen Map] 26. DCU Instruction Prefetcher Option Values: Enabled Revision 1.0 111

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Intel® Server Board S1200V3RP
BIOS Setup Interface
MLC Streamer is a speculative prefetch unit within the processor(s).
Note: Modifying this setting may affect performance.
Comments:
MLC Streamer is normally Enabled, for best efficiency in L2
Cache and Memory Channel use but disabling it may improve performance for some
processing loads and on certain benchmarks.
Back to [Advanced Screen] — [Screen Map]
24. MLC Spatial Prefetcher
Option Values:
Enabled
Disabled
Help Text:
[Enabled] – Fetches adjacent cache line (128 bytes) when required data is not currently
in cache.
[Disabled] – Only fetches cache line with data required by the processor (64 bytes).
Comments:
MLC Spatial Prefetcher is normally Enabled, for best efficiency in
L2 Cache and Memory Channel use but disabling it may improve performance for some
processing loads and on certain benchmarks.
Back to [Advanced Screen] — [Screen Map]
25. DCU Data Prefetcher
Option Values:
Enabled
Disabled
Help Text:
The next cache line will be prefetched into L1 data cache from L2 or system memory
during unused cycles if it sees that the processor core has accessed several bytes
sequentially in a cache line as data.
[Disabled] – Only fetches cache line with data required by the processor (64 bytes).
Comments:
DCU Data Prefetcher is normally Enabled, for best efficiency in L1
Data Cache and Memory Channel use but disabling it may improve performance for
some processing loads and on certain benchmarks.
Back to [Advanced Screen] — [Screen Map]
26. DCU Instruction Prefetcher
Option Values:
Enabled
Revision 1.0
111