Re: [PATCH v2 2/2] sched: add throttled time stat for throttled children

[Michal Koutný]

On Mon, Jun 12, 2023 at 04:27:48PM -0700, Josh Don <joshdon@xxxxxxxxxx> wrote:
> We currently export the total throttled time for cgroups that are given
> a bandwidth limit.

I assume you refer to cpu.stat:throttled_usec (from struct
cfs_bandwidth) -- notice that the value is not properly hierarchical
despite v2 filename.

> This patch extends this accounting to also account the total time that
> each children cgroup has been throttled.

IIUC, this is visible on inner-nodes cpu cgroups (i.e. with no tasks)?

IOW, wouldn't you get the intended information if hierarchical summing
was added/fixed for cpu.stat:throttled_usec?

Thanks,
Michal

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