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    SubjectRe: [PATCH v4 3/3] mm/free_pcppages_bulk: prefetch buddy while not holding lock
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    On 03/02/2018 09:55 AM, Vlastimil Babka wrote:
    > It's even stranger to me. Struct page is 64 bytes these days, exactly a
    > a cache line. Unless that changed, Intel CPUs prefetched a "buddy" cache
    > line (that forms an aligned 128 bytes block with the one we touch).

    I believe that was a behavior that was specific to the Pentium 4
    "Netburst" era. I don't think the 128-byte line behavior exists on
    modern Intel cpus.

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