Re: Fwd: Intel hybrid CPU scheduler always prefers E cores

From: Tim Chen
Date: Tue Nov 28 2023 - 18:10:55 EST


On Tue, 2023-11-28 at 23:33 +0100, Ramses wrote:

> I applied the patch on top of 6.6.2, but unfortunately I see more or less the same behaviour as before, with single-threaded CPU-bound tasks running almost exclusively on E cores.
>
> Ramses

I suspect that you may have other issues. I wonder if CPU priorities are getting
assigned properly on your system.

Saw in the original bugzilla
https://bugzilla.kernel.org/show_bug.cgi?id=218195
that you don't see /proc/sys/kernel/sched_itmt_enabled which
may be a symptom of such a problem.

+Srinivas, is there something Ramses can do to help
find out if there are issues with cppc?

Tim