Re: [PATCH 0/4] sched: The newidle balance regression

Chris Mason
2025-11-10T19:48:01Z

On 11/7/25 11:06 AM, Peter Zijlstra wrote:
> Hi!
>
> So most of you ran into Chris' commit 155213a2aed4 ("sched/fair: Bump
> sd->max_newidle_lb_cost when newidle balance fails") [*]
>
> And I posted a patch with a few alternative options. And while I've heard back
> from a number of you, indicating that NI_TARGET (the effective revert) works
> for you. Not many tested TARGET+RANDOM (thanks Adam!).
>
> In my limited schbench testing that combination isn't horrible, and per Adam
> that combination also doesn't suck for him. Chris, could you please see what
> this does for your machines with your actual workload?

Thanks Peter, I've got a big machine setup now and I'll get some numbers
this week.

-chris