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SubjectRe: Sending some form of notifaction when sched_fifo throttling kicks in...
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On Mon, 2010-12-27 at 12:13 +0530, Bharata B Rao wrote: 
> > Do others have some idea and/or comments about that? This is
> > ABI/interface, and that really scares me! :-P
>
> You might want to note that CFS bandwidth control patches export some
> such stats via a new per-cgroup file cpu.stat. It exports 3 statistics:
>
Yeah, I saw that. What can be also done is to extend schedstats and then
apply it to cgroups as well... I think Dhaval told me he has some plans
about that, am I wrong?

> nr_periods: Number of enforcement intervals that have elapsed.
> nr_throttled: Number of times the group has been throttled/limited.
> throttled_time: The total time duration (in nanoseconds) for which the group
> remained throttled.
>
More than reasonable reporting, to me at least. :-)

Regards,
Dario

--
<<This happens because I choose it to happen!>> (Raistlin Majere)
----------------------------------------------------------------------
Dario Faggioli, ReTiS Lab, Scuola Superiore Sant'Anna, Pisa (Italy)
http://retis.sssup.it/people/faggioli -- dario.faggioli@jabber.org
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