On Fri 28-08-15 19:49:18, Vladimir Davydov wrote:

On Fri, Aug 28, 2015 at 11:25:30AM -0400, Tejun Heo wrote:

quoted

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