Re: [PATCH -V11 2/9] mm/migrate: update node demotion order on hotplug events

From: Dave Hansen
Date: Wed Feb 23 2022 - 19:06:10 EST


On 2/23/22 15:02, Abhishek Goel wrote:
> If needed, I will provide experiment results and traces that were used
> to conclude this.

It would be great if you can provide some more info. Even just a CPU
time profile would be helpful.

It would also be great to understand more about what "hotplug on power
systems" actually means. Is this a synthetic benchmark, or are actual
end-users running into this issue? Are entire nodes of CPUs going
offline? Or is this just doing an offline/online of CPU 22 in a 100-CPU
NUMA node?