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SubjectRe: [PATCH RESEND] autonuma: Fix scan period updating
* Huang, Ying <ying.huang@intel.com> [2019-07-26 15:45:39]:

> Hi, Srikar,
>
> >
> > More Remote + Private page Accesses:
> > Most likely the Private accesses are going to be local accesses.
> >
> > In the unlikely event of the private accesses not being local, we should
> > scan faster so that the memory and task consolidates.
> >
> > More Remote + Shared page Accesses: This means the workload has not
> > consolidated and needs to scan faster. So we need to scan faster.
>
> This sounds reasonable. But
>
> lr_ratio < NUMA_PERIOD_THRESHOLD
>
> doesn't indicate More Remote. If Local = Remote, it is also true. If

less lr_ratio means more remote.

> there are also more Shared, we should slow down the scanning. So, the

Why should we slowing down if there are more remote shared accesses?

> logic could be
>
> if (lr_ratio >= NUMA_PERIOD_THRESHOLD)
> slow down scanning
> else if (sp_ratio >= NUMA_PERIOD_THRESHOLD) {
> if (NUMA_PERIOD_SLOTS - lr_ratio >= NUMA_PERIOD_THRESHOLD)
> speed up scanning
> else
> slow down scanning
> } else
> speed up scanning
>
> This follows your idea better?
>
> Best Regards,
> Huang, Ying

--
Thanks and Regards
Srikar Dronamraju

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