Disclosure of H/W prefetcher control on some Intel processors

Re:Disclosure of H/W prefetcher control on some Intel proces... by colanderman on Thursday October 16, 2014 @08:41PM (#8468787)

Presumably disable. They are enabled by default, and the suggested use is to disable for more reliable benchmarking.

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Re:Disclosure of H/W prefetcher control on some Intel proces... by x0x0 on Thursday October 16, 2014 @09:36PM (#8468958)

Unless you plan to run with these disabled, how would disabling them during benchmarking possibly improve the relevance of the benchmarks? And if the benchmarks aren't relevant, why benchmark?

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Re:Disclosure of H/W prefetcher control on some Intel proces... by colanderman on Thursday October 16, 2014 @11:35PM (#8469317)

If, e.g., you're trying to benchmark the memory itself, and not the processor's prefetch algorithm.

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