From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michal =?iso-8859-1?Q?Koutn=FD?= <mkoutny-IBi9RG/b67k@public.gmane.org>
Subject: Re: Short process stall after assigning it to a cgroup
Date: Fri, 25 Jun 2021 10:52:43 +0200
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On Fri, Jun 25, 2021 at 09:32:59AM +0200, Ronny Meeus <ronny.meeus-Re5JQEeQqe8@public.gmane.org=
m> wrote:
> The application does not have strict RT requirements.

Can you even use the normal non-RT scheduling policy? ...

> We were working with fixed croups initially but this has the big
> disadvantage that the unused budget configured in one group cannot be
> used by another group and as such the processing power is basically
> lost.

=2E..then your problem may be solvable with mere weights to adjust prioriti=
es
of competitors. (Or if you need to stick with RT policies you can assign
different priorities on task basis, I wouldn't use RT groups for that.)

> About the stack: it is difficult to know from the SW when the issue
> happens so dumping the stack is not easy I think but it is a good
> idea.
> I will certainly think about it.

You may sample it periodically or start prior a migration to get more
insights what's causing the delay.=20

Regards,
Michal


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