Realtime tasks and cgroups (cpu.shares)

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Hi all,

is it possible to combine real time tasks and cgroups (in particular cpu.shares)?
The background of the question is the following:
If a real time task hangs by accident in an endless loop, it blocks the complete access to the system.
One idea could be to reserve a small percentage of the CPU for non real time stuff to
avoid these kind of situations.

Is this possible?

Thanks for any feedback on this topic.

Regards

Mathias
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