Re: excessive CPU utilization by isolate_freepages?

On 06/28/2012 09:52 AM, David Rientjes wrote:

On Wed, 27 Jun 2012, Rik van Riel wrote:

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I doubt compaction try to migrate continuously although we have no free
memory.
Could you apply this patch and retest?

https://lkml.org/lkml/2012/6/21/30

Not sure if Jim is using memcg; if not, then this won't be helpful.

It doesn't related to memcg.
if compaction_alloc can't find suitable migration target, it returns NULL.
Then, migrate_pages should be exit.

-- 
Kind regards,
Minchan Kim

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