On Tue 24-11-20 10:58:36, Aaron Tomlin wrote:
> Each memory-controlled cgroup is assigned a unique ID and the total
> number of memory cgroups is limited to MEM_CGROUP_ID_MAX.
>
> This patch provides the ability to determine the number of
> memory cgroups from the root memory cgroup, only.
> A value of 1 (i.e. self count) is returned if there are no children.
> For example, the number of memory cgroups can be established by
> reading the /sys/fs/cgroup/memory/memory.total_cnt file.
Hi Michal,
Could you add some explanation why is this information useful for
userspace? Who is going to use it and why a simple scripting on top of
cgroupfs is insufficient.
Thank you for your feedback.
Indeed, one can use a command/script to manually calculate this.
Having said that, one that creates a significant number of
memory-controlled cgroups may prefer a quick, simple and reliable method
to generate the aforementioned data, for management purposes only.
As such, I thought this patch might be particularly useful.
Kind regards,
--
Aaron Tomlin