Re: excessive CPU utilization by isolate_freepages?

[Minchan Kim]

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

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