Re: [PATCH] sched/fair: Consider cpu affinity when allowing NUMA imbalance in find_idlest_group

From: Peter Zijlstra
Date: Wed Feb 09 2022 - 12:20:51 EST


On Wed, Feb 09, 2022 at 03:14:32PM +0000, Nayak, K Prateek wrote:
> [AMD Official Use Only]

I think you need to invest in a new mail setup.

> > Where does this affinity come from?
>
> The affinity comes from limiting the process to a certain subset of
> available cpus by modifying the cpus_ptr member of task_struck
> via taskset or numactl.

That's obviously not an answer. Why is that done?