Re: [RFC][PATCH 0/2] Android style loosening of cgroup attach permissions

[Johannes Weiner]

On Thu, Jun 04, 2015 at 10:11:17AM -0700, John Stultz wrote:
> On Tue, Jun 2, 2015 at 10:50 PM, Tejun Heo <tj@xxxxxxxxxx> wrote:
> > memcg usage came up a while ago and there wasn't anything major which
> > can't be achieved (usually better) by following more standard cgroup
> > usage - changing knobs rather than moving tasks around.
> 
> Do you have a pointer to that discussion or maybe even just a sense of
> who was involved so I can trawl the list and better understand it?

I wrote a lengthy explanation of why moving tasks between cgroups is
problematic from a memcg view: https://lkml.org/lkml/2014/12/19/358

Rather than creating super-cgroups as configuration domains and using
migration as a reconfiguration mechanism, it's much better to group
tasks per app and reconfigure the groups themselves using specific
presets for classes of apps, like foreground, background, audio.
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