NTP on amd74 + powernow issues
koitsu at freebsd.org
Sat Apr 5 10:58:04 UTC 2008
On Sat, Apr 05, 2008 at 11:13:49AM +0200, Guido van Rooij wrote:
> 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.
> kern.timecounter.choice: TSC(800) i8254(0) dummy(-1000000)
> IIRC I couldn't boot at all with acpi, so I disabled it.
ACPI-fast should address the problem you're seeing with NTP drift.
It would then be best to figure out why your machine won't boot with
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