Re: [PATCH 2/3] sched/numa: Allow a floating imbalance between NUMA nodes

[Peter Zijlstra]

On Tue, Nov 17, 2020 at 01:42:21PM +0000, Mel Gorman wrote:
> This patch revisits the possibility that NUMA nodes can be imbalanced
> until 25% of the CPUs are occupied. The reasoning behind 25% is somewhat
> superficial -- it's half the cores when HT is enabled.  At higher
> utilisations, balancing should continue as normal and keep things even
> until scheduler domains are fully busy or over utilised.

Do we want to make that shift depend on the actual SMT factor?