Re: [PATCH] sched/fair: check for idle core

[Peter Zijlstra]

On Wed, Oct 21, 2020 at 01:56:55PM +0200, Julia Lawall wrote:
> Prior to 5.8, my machine was using intel_pstate and had few background
> tasks.  Thus the problem wasn't visible in practice.  Starting with 5.8
> the kernel decided that intel_cpufreq would be more appropriate, which
> introduced kworkers every 0.004 seconds on all cores.

That still doesn't make any sense. Are you running the legacy on-demand
thing or something?

Rafael, Srinivas, Viresh, how come it defaults to that?