Re: [PATCH 1/7] sched,numa: use group's max nid as task's preferred nid
From: Mel Gorman
Date: Wed Jun 25 2014 - 06:32:03 EST
On Mon, Jun 23, 2014 at 11:41:29AM -0400, riel@xxxxxxxxxx wrote:
> From: Rik van Riel <riel@xxxxxxxxxx>
>
> From task_numa_placement, always try to consolidate the tasks
> in a group on the group's top nid.
>
> In case this task is part of a group that is interleaved over
> multiple nodes, task_numa_migrate will set the task's preferred
> nid to the best node it could find for the task, so this patch
> will cause at most one run through task_numa_migrate.
>
> Signed-off-by: Rik van Riel <riel@xxxxxxxxxx>
That loop was written prior to pseudo-interleaving as well and in the
context of that change this makes sense and removes a potentially
expensive loop.
Acked-by: Mel Gorman <mgorman@xxxxxxx>
--
Mel Gorman
SUSE Labs
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