On Thu, Sep 22, 2022 at 05:21:21PM +0200, Rafael J. Wysocki wrote:> Well, it can be forced to use ACPI idle instead.Yeah, I did that earlier. The dummy IO read in question costs ~3K onaverage on my Coffeelake box here.-- Regards/Gruss, Boris.https://people.kernel.org/tglx/notes-about-netiquette