Subject: Re: Poor timekeeping on x86 smp branch?
To: Rafal Boni <firstname.lastname@example.org>
From: John Franklin <email@example.com>
Date: 04/23/2002 14:58:58
On Tue, Apr 23, 2002 at 02:45:22PM -0400, Rafal Boni wrote:
> In message <20020423182102.C51A47A1@ab.use.net>, you write:
> -> | I figured I'd send a heads-up if this wasn't a known problem; in
> -> | case it *isn't* I can do some poking around, but unfortunately
> -> | have too many other things on my plate to do any thorough digging.
> -> How horrible is horrible?
> *Really* horrible; lost 45 minutes over the course of 9 hours and ntpd
> seemed to be primarily responsible for that badness... The clock in that
> box is nowhere near as bad by itself.
I've seen this before. On your dmesg output, look for lines like:
cpu0: calibrating local timer
cpu0: apic clock running at 66 MHz
Is the apic running at a reasonable rate?
ICBM: 35°43'56"N 78°53'27"W