Messages in this thread |  | | | Date | Mon, 13 Aug 2012 09:27:53 -0700 | | From | Andi Kleen <> | | Subject | Re: [PATCH v2 4/6] x86: Add clear_page_nocache |
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> Moving 64 bytes per cycle is faster on Sandy Bridge, but slower on > Westmere. Any preference? ;)
You have to be careful with these benchmarks.
- You need to make sure the data is cache cold, cache hot is misleading. - The numbers can change if you have multiple CPUs doing this in parallel.
-Andi
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