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Date: Thu, 23 Mar 2006 12:31:18 -0800
From: Maxim Sobolev <sobomax@FreeBSD.org>
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To: Poul-Henning Kamp <phk@phk.freebsd.dk>
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Cc: "current@freebsd.org" <current@FreeBSD.org>
Subject: Re: timecounting with TSC doesn't work properly on my notebook
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Poul-Henning Kamp wrote:
> In message <4421D322.3010901@digifonica.com>, Maksym Sobolyev writes:
>> Hi,
>>
>> After updating to the recent current (previous one was circa end-2005) I 
>> have found that time on machine goes by 3-4 times faster than wallclock 
>>  with TSC timecounter. Selecting ACPI-safe instead helps.
> 
> It should not default to TSC if it has ACPI-safe.
> 
> The TSC varies with power-save featurs on most laptops.

OK, don't know why but I am having lot of "runtime went backwards" with 
ACPI-safe.

-Maxim