[systemd-devel] cgroupsv2 and realtime processes

Michał Zegan webczat at outlook.com
Mon Jun 6 16:31:20 UTC 2022


W dniu 6.06.2022 o 18:29, Michal Koutný pisze:
> On Mon, Jun 06, 2022 at 05:59:32PM +0200, Michał Zegan <webczat at outlook.com> wrote:
>> I assume if it would be on it would break any and all realtime
>> usage...?
> Most likely (you'd not be able either: turn on RT policy, migrate the
> process or enable CPU controller, i.e. a step that'd lead to an invalid
> state).
>
> I'm curious, what would be your use case for turning RT group
> schedulling on?

I don't necessarily have any usecase, I just forgot that option was even 
configurable. Even though i knew about it's existence previously.

Arch disables it by default and this seems to be a good choice. but 
cgroupsv2 docs don't say that this behavior is conditioned on that 
option so I forgot it existed.

>
> Thanks,
> Michal
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