Re: [PATCH 33/63] sched: Retry migration of tasks to CPU on a preferrednode

From: Rik van Riel
Date: Mon Oct 07 2013 - 14:58:39 EST


On 10/07/2013 06:29 AM, Mel Gorman wrote:
> When a preferred node is selected for a tasks there is an attempt to migrate
> the task to a CPU there. This may fail in which case the task will only
> migrate if the active load balancer takes action. This may never happen if
> the conditions are not right. This patch will check at NUMA hinting fault
> time if another attempt should be made to migrate the task. It will only
> make an attempt once every five seconds.
>
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
> Signed-off-by: Peter Zijlstra <peterz@xxxxxxxxxxxxx>

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

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