Re: [Xen-devel] [PATCH v2 3/3] xen: RCU: make the period of the idle timer adaptive.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 28.09.17 at 12:16, <dario.faggioli@xxxxxxxxxx> wrote:
> Basically, if the RCU idle timer, when (if!) it fires,
> finds that the grace period isn't over, we increase the
> timer's period (i.e., it will fire later, next time).
> If, OTOH, it finds the grace period is already finished,
> we decrease the timer's period (i.e., it will fire a bit
> earlier next time).
> 
> The goal is to let the period timer sefl-adjust to a
> number of 'misses', of the order of 1%.
> 
> Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
> Suggested-by: George Dunlap <george.dunlap@xxxxxxxxxx>

Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>


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