On Wed, Aug 17, 2016 at 03:29:04PM -0700, Huang, Ying wrote:
> branch-miss-rate decreased from ~0.30% to ~0.043%.
>
> So I guess there are some code alignment change, which caused decreased
> branch miss rate.
Hrrm, I still can't imagine how that would happen if the machine
supports POPCNT and we never call the __sw_hweight* variants. Or does
it?
Can you paste /proc/cpuinfo from that Sandy Bridge-EP box?
Thanks.
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