Re: [PATCH 4/4] memcg: always enable kmemcg on the default hierarchy

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On Fri 28-08-15 19:49:18, Vladimir Davydov wrote:
> On Fri, Aug 28, 2015 at 11:25:30AM -0400, Tejun Heo wrote:
> > On the default hierarchy, all memory consumption will be accounted
> > together and controlled by the same set of limits.  Always enable
> > kmemcg on the default hierarchy.
> 
> IMO we should introduce a boot time knob for disabling it, because kmem
> accounting is still not perfect, besides some users might prefer to go
> w/o it for performance reasons.

I would even argue for opt-in rather than opt-out.
-- 
Michal Hocko
SUSE Labs
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