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.
