On Thu, Mar 11, 2021 at 02:17:52PM +0800, Chengming Zhou wrote:

We have the netlink CGROUPSTATS_CMD_GET interface to get taskstats
of the cgroup on v1, but haven't the equivalent interface on v2,
making it difficult to calculate the per-cgroup cpu load in cadvisor
or implement the cgroup proc interface in lxcfs, like /proc/loadavg.

So, this is what the PSI metrics are for and we've been using it for that
for quite a while now. I'd much prefer not adding something duplicate (and
incomplete).

Thanks.

-- 
tejun