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Date: Sat, 5 Apr 2008 11:13:49 +0200
From: Guido van Rooij <guido@gvr.org>
To: David Malone <dwmalone@maths.tcd.ie>
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	<20080404194238.GA75601@walton.maths.tcd.ie>
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Cc: freebsd-stable@freebsd.org
Subject: Re: NTP on amd74 + powernow issues
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On Fri, Apr 04, 2008 at 08:42:38PM +0100, David Malone wrote:
> On Fri, Apr 04, 2008 at 07:46:05PM +0200, Guido van Rooij wrote:
> > I've got a amd64 system where I;m using powernow. I am using th i8254
> > timecounter. I keep getting time resets from ntp:
> 
> I don't think the i8254 should be effected by the i8254. Are there
> any other choices listed under kern.timecounter.choice? I have one
> amd64 machine running powerd to control the powernow stuff and it
> works OK with the ACPI timer.

Nope:
kern.timecounter.choice: TSC(800) i8254(0) dummy(-1000000)

IIRC I couldn't boot at all with acpi, so I disabled it.

-Guido