Re: TSC instead of ACPI: powerd doesn't work anymore (to be expected?)

From: David O'Brien (obrien_at_freebsd.org)
Date: 10/29/05

  • Next message: David O'Brien: "Re: TSC instead of ACPI: powerd doesn't work anymore (to be expected?)" 
    Date: Sat, 29 Oct 2005 12:55:46 -0700
To: Alexander Leidinger <Alexander@Leidinger.net>, freebsd-current@freebsd.org

    On Fri, Oct 28, 2005 at 11:54:57AM +0200, Poul-Henning Kamp wrote:
    > In general, if you run powerd to change your cpu clock (= TSC
    > frequency), using TSC as timecounter is _not_ what you want to do.

    The issue is TSC is not guarnetted to be power setting invarient.
    Meaning if you change the frequence of the CPU thru power management, the
    rate the TSC counts can change. 

    -- 
-- David  (obrien@FreeBSD.org)
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