Re: [PATCH 01/12] tracing, vmscan: Add trace events for kswapdwakeup, sleeping and direct reclaim

From: Larry Woodman
Date: Mon Jun 14 2010 - 16:56:55 EST

On Mon, 2010-06-14 at 12:17 +0100, Mel Gorman wrote:
> This patch adds two trace events for kswapd waking up and going asleep for
> the purposes of tracking kswapd activity and two trace events for direct
> reclaim beginning and ending. The information can be used to work out how
> much time a process or the system is spending on the reclamation of pages
> and in the case of direct reclaim, how many pages were reclaimed for that
> process. High frequency triggering of these events could point to memory
> pressure problems.
> Signed-off-by: Mel Gorman <mel@xxxxxxxxx>

Acked-by: Larry Woodman <lwoodman@xxxxxxxxxx>

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