Re: [PATCH RFC] sched/fair: bump sd->max_newidle_lb_cost when newidle balance fails

[Chris Mason]

On 6/26/25 10:26 AM, Vincent Guittot wrote:
> On Thu, 26 Jun 2025 at 12:58, Chris Mason <clm@xxxxxxxx> wrote:

>> Got it, I'll play with that.  Vincent, was there a benchmark I can use
>> to see if I've regressed the case you were focused on?
> 
> It's not a public benchmark but I had some unitary tests with tasks
> waiting on a busy CPU while other CPUs become idle for a "long" time
> (but still less than 500us in average). This is even more true with
> frequency scaling which will minimize the idle duration by decreasing
> the frequency

Ok, I don't think I'll be able to reliably recreate that on my own, can
I ask you to rerun against the v2 I sent out?

-chris