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371633
2014 Jun 12
2
[PATCH v11 09/16] qspinlock, x86: Allow unfair spinlock in a virtual guest
On Wed, Jun 11, 2014 at 09:37:55PM -0400, Long, Wai Man wrote:
>
> On 6/11/2014 6:54 AM, Peter Zijlstra wrote:
> >On Fri, May 30, 2014 at 11:43:55AM -0400, Waiman Long wrote:
> >>Enabling this configuration feature causes a slight decrease the
> >>performance of an uncontended lock-unlock operation by about 1-2%
> >>mainly due to the use of a static key.