Re: [3.6 regression?] THP + migration/compaction livelock (I think)

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On 2012 Nov 13, David Rientjes wrote:
> On Wed, 14 Nov 2012, Marc Duponcheel wrote:
> 
> >  Hi all, please let me know if there is are patches you want me to try.
> > 
> >  FWIW time did not stand still and I run 3.6.6 now.
> 
> Hmm, interesting since there are no core VM changes between 3.6.2, the 
> kernel you ran into problems with, and 3.6.6.

 Hi David

 I have not tried yet to repro #49361 on 3.6.6, but, as you say, if
there are no core VM changes, I am confident I can do so just by doing

# echo always > /sys/kernel/mm/transparent_hugepage/enabled

 I am at your disposal to test further, and, if there are patches, to
try them out.

 Note that I only once experienced a crash for which I could not find
relevant info in logs. But the hanging processes issue could always be
reproduced consistently.

 have a nice day

--
 Marc Duponcheel
 Velodroomstraat 74 - 2600 Berchem - Belgium
 +32 (0)478 68.10.91 - marc@xxxxxxxxxx

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