Re: [PATCH 18/63] sched: numa: Slow scan rate if no NUMA hintingfaults are being recorded

From: Rik van Riel
Date: Mon Oct 07 2013 - 14:02:36 EST


On 10/07/2013 06:28 AM, Mel Gorman wrote:
> NUMA PTE scanning slows if a NUMA hinting fault was trapped and no page
> was migrated. For long-lived but idle processes there may be no faults
> but the scan rate will be high and just waste CPU. This patch will slow
> the scan rate for processes that are not trapping faults.
>
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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