Re: [PATCH 1/5] sched/pci: Reduce psimon FIFO priority
From: Peter Zijlstra
Date: Thu Aug 01 2019 - 17:02:13 EST
On Thu, Aug 01, 2019 at 01:49:07PM -0400, Johannes Weiner wrote:
> 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/
Yeah, already fixed that.. obviously one sees such typoes only after