Re: [PATCH v1 5/6] mm: make vmstat_update periodic run conditional

[Christoph Lameter]

On Tue, 8 May 2012, Gilad Ben-Yossef wrote:

> > But this would still mean that the vmstat update thread would run on an
> > arbitrary cpu. If I have a sacrificial lamb processor for OS processing
> > then I would expect the vmstat update thread to stick to that processor
> > and avoid to run on the other processor that I would like to be as free
> > from OS noise as possible.
> >
>
> OK, what about -
>
> - We pick a scapegoat cpu (the first to come up gets the job).
> - We add a knob to let user designate another cpu for the job.
> - If scapegoat cpus goes offline, the cpu processing the off lining is
> the new scapegoat.
>
> Does this makes better sense?

Sounds good. The first that comes up. If the cpu is isolated then the
first non isolated cpu is picked.

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