Messages in this thread | | | From | "Rafael J. Wysocki" <> | Date | Thu, 22 Sep 2022 17:53:17 +0200 | Subject | Re: [PATCH] ACPI: processor_idle: Skip dummy wait for processors based on the Zen microarchitecture |
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On Thu, Sep 22, 2022 at 5:36 PM Borislav Petkov <bp@alien8.de> wrote: > > 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 on > average on my Coffeelake box here.
Well, that's the cost of forcing something non-default.
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