Date: Thu, 23 Mar 2006 12:31:18 -0800 From: Maxim Sobolev <sobomax@FreeBSD.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: "current@freebsd.org" <current@FreeBSD.org> Subject: Re: timecounting with TSC doesn't work properly on my notebook Message-ID: <44230596.20100@FreeBSD.org> In-Reply-To: <13727.1143094901@critter.freebsd.dk> References: <13727.1143094901@critter.freebsd.dk>
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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
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