NTP on amd74 + powernow issues

[Jeremy Chadwick]

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.
> 
> Nope:
> 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
ACPI enabled.

-- 
| Jeremy Chadwick                                    jdc at parodius.com |
| Parodius Networking                           http://www.parodius.com/ |
| UNIX Systems Administrator                      Mountain View, CA, USA |
| Making life hard for others since 1977.                  PGP: 4BD6C0CB |