Re: [PATCH v2 3/4] sched/rt: Split root_domain->rto_count to per-NUMA-node counters

[Peter Zijlstra]

On Mon, Jul 21, 2025 at 02:10:25PM +0800, Pan Deng wrote:
> As a complementary, this patch splits
> `rto_count` into per-numa-node counters to reduce the contention.

Right... so Tim, didn't we have similar patches for task_group::load_avg
or something like that? Whatever did happen there? Can we share common
infra?

Also since Tim is sitting on this LLC infrastructure, can you compare
per-node and per-llc for this stuff? Somehow I'm thinking that a 2
socket 480 CPU system only has like 2 nodes and while splitting this
will help some, that might not be excellent.

Please test on both Intel and AMD systems, since AMD has more of these
LLC things on.