linux-kernel - Re: [PATCH 2/3] sched,numa: retry placement more frequently when misplaced

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Message-ID: <20140425090548.GB23991@suse.de>
Date:	Fri, 25 Apr 2014 10:05:48 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	riel@...hat.com
Cc:	linux-kernel@...r.kernel.org, mingo@...nel.org,
	peterz@...radead.org, chegu_vinod@...com
Subject: Re: [PATCH 2/3] sched,numa: retry placement more frequently when
 misplaced

On Fri, Apr 11, 2014 at 01:00:28PM -0400, riel@...hat.com wrote:
> From: Rik van Riel <riel@...hat.com>
> 
> When tasks have not converged on their preferred nodes yet, we want
> to retry fairly often, to make sure we do not migrate a task's memory
> to an undesirable location, only to have to move it again later.
> 
> This patch reduces the interval at which migration is retried,
> when the task's numa_scan_period is small.
> 
> Signed-off-by: Rik van Riel <riel@...hat.com>
> Tested-by: Vinod Chegu <chegu_vinod@...com>

Acked-by: Mel Gorman <mgorman@...e.de>

-- 
Mel Gorman
SUSE Labs
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