Re: [Linux-ia64] NTP broken?

[Peter Chubb <peter@chubb.wattle.id.au>]

>>>>> "David" = David Mosberger <davidm@napali.hpl.hp.com> writes:

>>>>> On Wed, 22 May 2002 13:08:08 +1000, Peter Chubb <peter@chubb.wattle.id.au> said:
Peter> NTP on Linux 2.4.17/IA64 appears broken.  ntpd never seems to
Peter> be able to pull the PLL into sync, even after using ntpdate to
Peter> set the clock to the correct server time.

Peter> What are other peoples' experiences with NTP on IA64?

David> I'm not aware of any problems with NTP keeping in sync with
David> realtime.  

OK, I now have two i2000s both running the same kernel, both
configured identically.  On one of them, NTP pulls into sync within a
few minutes.  The other just drifts further and further away.

One interesting `feature' is that on the one that keeps running away,
the CPU clock is detected as 718.793988 MHz not the supposedly correct
733MHz.  The boot message says:
	 CPU 0: base freq\x130.684MHz, ITC ratio\x11/2, ITC
		freqq8.764MHz
My suspicion is that this is incorrect on this machine, and it is
*really* at 733MHz --- which would explain the lack of sync (NTP just
can't slow the clock down enough) and the runaway time (733/718 is
around 1.02; which corresponds to a second a minute) 

The BIOS reports 733MHz, though.

Peter C