Intel P4000RP Technical Product Specification - Page 123
DCU Data Prefetcher
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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