Re: [PATCH] sched/psi: add cpu_prio pressure metric for high-priority task stalls

[Michal Koutný]

Hello.

On Tue, Aug 11, 2026 at 06:46:10PM +0800, shisiyuan <shisiyuan19870131@xxxxxxxxx> wrote:
> From: shisiyuan <shisiyuan@xxxxxxxxxxx>
> 
> Introduce a new PSI (Pressure Stall Information) indicator that
> measures how much walltime priority-sensitive tasks spend waiting
> for CPU, exposed as /proc/pressure/cpu_prio alongside the existing
> io/memory/cpu/irq metrics.

You can "just" put the priority-sensitive tasks into a cgroup (no cpu
controller needed) and track the per-cgroup PSI values.

HTH,
Michal

Attachment: signature.asc
Description: PGP signature