From: Sebastian Andrzej Siewior
> Sent: 14 June 2022 14:26
...
> > These changes seem to drop the priority from above that of the
> > highest priority RT process down to that of a default priority
> > user process.
> > There is no real guarantee that the latter will run 'any time soon'.
>
> Not sure I can follow. Using threaded interrupts will run at FIFO-50 by
> default. Workqueue however is SCHED_OTHER. But then it is not bound to
> any CPU so it will run on an available CPU.
Ok, I'd only looked at normal workqueues, softints and napi.
They are all SCHED_OTHER.
Unbound FIFO is moderately ok - they are sticky but can move.
The only problem is that they won't move if a process is
spinning in kernel on the cpu they last run on.
David
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