Re: [PATCH 1/5] sched/pci: Reduce psimon FIFO priority

[Johannes Weiner]

On Thu, Aug 01, 2019 at 01:13:49PM +0200, Peter Zijlstra wrote:
> PSI defaults to a FIFO-99 thread, reduce this to FIFO-1.
> 
> FIFO-99 is the very highest priority available to SCHED_FIFO and
> it not a suitable default; it would indicate the psi work is the
> most important work on the machine.
> 
> Since Real-Time tasks will have pre-allocated memory and locked it in
> place, Real-Time tasks do not care about PSI. All it needs is to be
> above OTHER.
> 
> Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
> Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>

Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Subject should be s/pci/psi/