Timekeeping hosed by factor 3, high lapic[01] interrupt rates

[John Baldwin]

On Tuesday 21 June 2005 03:51 pm, Jens Schweikhardt wrote:
> John,
>
> # > See
> http://lists.freebsd.org/pipermail/freebsd-current/2005-May/050210.html # >
> for the whole thread.
> #
> # I did glance over it, but I don't really have time to read every e-mail
> on # current@ in detail. :(  Do you have verbose dmesg's for both cases? 
> If so, # can you get the 'lapic: Divisor' lines from each boot?
>
> Sure, they are the same:
> lapic: Divisor 2, Frequency 99829738 hz
>
> It appears Chris Gilbert has the same problem, see "Timekeeping gone
> whack in 6-CURRENT" on this list.

Ok, this is weird.  Does this happen if you disable SMP via 
'kern.smp.disabled=1' from the loader?  UP has more timecounters available 
for use, so I'm curious if this is a problem with the 8254 timecounter code 
for some reason.

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org