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SubjectRe: [PATCH 02/10] locking/qspinlock: Remove unbounded cmpxchg loop from locking slowpath
On Fri, Apr 06, 2018 at 04:50:19PM -0400, Waiman Long wrote:
> # of threads 4.16 kernel patched 4.16 kernel
> ------------ ----------- -------------------
> 1 7,417 kop/s 7,408 kop/s
> 2 5,755 kop/s 4,486 kop/s
> 3 4,214 kop/s 4,169 kop/s
> 4 4,396 kop/s 4,383 kop/s
>

Interesting, I didn't see that dip in my userspace tests.. I'll have to
try again.


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