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authorNoah Goldstein <goldstein.w.n@gmail.com>2023-06-07 13:18:03 -0500
committerNoah Goldstein <goldstein.w.n@gmail.com>2023-06-12 11:33:39 -0500
commit180897c161a171d8ef0faee1c6c9fd6b57d8b13b (patch)
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x86: Make the divisor in setting `non_temporal_threshold` cpu specific
Different systems prefer a different divisors. From benchmarks[1] so far the following divisors have been found: ICX : 2 SKX : 2 BWD : 8 For Intel, we are generalizing that BWD and older prefers 8 as a divisor, and SKL and newer prefers 2. This number can be further tuned as benchmarks are run. [1]: https://github.com/goldsteinn/memcpy-nt-benchmarks Reviewed-by: DJ Delorie <dj@redhat.com>
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