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SubjectRe: [PATCH v3 0/7] locking/qspinlock: Enhance pvqspinlock performance
On Wed, 2015-07-22 at 16:12 -0400, Waiman Long wrote:
> Patch 3 allows the collection of various count data that are useful
> to see what is happening in the system. They do add a bit of overhead
> when enabled slowing performance a tiny bit.

Ah ok you do mention the overhead. Hmmm but what's a tiny bit? A kernel
build comparison would be pretty nice to have a "usability" view.


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