Some of these boxes are running VMware.  On one box we shut down applications 
running VM ware and killed the daemons that start up at boot up.
We still get spurious interrupts at about the same time interval.
The problem with VM was interesting.   Since this is a Linux install running 
VM ware to support some Windows apps.  I would not think it is applicable.
The cloks speed of this processor is 1.7G equivalent but it is a single core.

Thanks
Larry

On Friday 25 June 2010 10:33, Mark Stodola wrote:
> Is this at all related with using a VM?
>
> Is this of any help? http://bugs.centos.org/view.php?id=2189
>
> Cheers,
> Mark
>
> Larry Linder wrote:
> > Adding "nosmp apm=force noapic api=off pci=noacpi" after a reboot of
> > system appeared to work on first inspection.   Some time after reboot
> > there are more interrupts and a write to /var/log/messages.   Hard on a
> > disk to say the least.
> > What we see is:
> > Jun 25 09:31:47 engr01 kernel: spurious APIC interrupt on CPU#0, should
> > never happen.
> > Jun 25 09:32:55 engr01 kernel: spurious APIC interrupt on CPU#0, should
> > never happen.
> > Jun 25 09:34:37 engr01 kernel: spurious APIC interrupt on CPU#0, should
> > never happen.
> > Jun 25 09:36:03 engr01 kernel: spurious APIC interrupt on CPU#0, should
> > never happen.
> > Jun 25 09:41:35 engr01 kernel: spurious APIC interrupt on CPU#0, should
> > never happen.
> > Jun 25 09:43:42 engr01 kernel: spurious APIC interrupt on CPU#0, should
> > never happen.
> > Jun 25 09:45:37 engr01 last message repeated 2 times
> > Jun 25 09:46:56 engr01 last message repeated 2 times
> > Jun 25 09:48:12 engr01 kernel: spurious APIC interrupt on CPU#0, should
> > never happen.
> > Jun 25 09:50:09 engr01 kernel: spurious APIC interrupt on CPU#0, should
> > never happen.
> > Jun 25 09:52:07 engr01 last message repeated 2 times
> > Jun 25 09:54:36 engr01 kernel: spurious APIC interrupt on CPU#0, should
> > never happen.
> > Jun 25 10:01:00 engr01 last message repeated 4 times
> > Jun 25 10:02:47 engr01 last message repeated 3 times
> > Jun 25 10:04:53 engr01 last message repeated 2 times
> >
> > There does not seem to be much on the net that offers any advice or ???
> >
> > Need to solve this problem before I have another disk to swap out.
> >
> > It is unique to a single core processor installation, as we have looked
> > for this same activity on several boxes with multi core processor and it
> > doesn't happen.
> >
> > Larry Linder