Re: [RFC PATCH 0/8] memory recharging for offline memcgs

[Yosry Ahmed]

On Thu, Jul 20, 2023 at 12:57 PM Tejun Heo <tj@xxxxxxxxxx> wrote:
>
> On Thu, Jul 20, 2023 at 11:35:15AM -0400, Johannes Weiner wrote:
> > It could also be argued that if you don't want to lose control over a
> > set of resources, then maybe don't delete their control domain while
> > they are still alive and in use. For example, when restarting a
> > workload, and the new instance is expected to have largely the same
> > workingset, consider reusing the cgroup instead of making a new one.
>
> Or just create a nesting layer so that there's a cgroup which represents the
> persistent resources and a nested cgroup instance inside representing the
> current instance.

In practice it is not easy to know exactly which resources are shared
and used by which cgroups, especially in a large dynamic environment.

>
> Thanks.
>
> --
> tejun