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

From: Rik van Riel
Date: Mon Jun 14 2010 - 11:47:09 EST

On 06/14/2010 07:17 AM, 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: Rik van Riel <riel@xxxxxxxxxx>

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