Dell Latitude 610 CPU clock rate degrading (debug info included)

[Nate Lawson]

Ted Faber wrote:
> On Tue, Jul 20, 2004 at 12:00:59PM -0700, Nate Lawson wrote:
> 
>>Ted Faber wrote:
>>>I tried booting without ACPI, but my time of day clock ran consistenty
>>>slow - which might mean that the same degredation was occurring without
>>>the OS readjusting for it.  In any case it wasn't clear that no ACPI
>>>helped.
>>
>>Same problem.  What timecounter are you using?  Switching away from TSC 
>>would help this.
> 
> With ACPI there's no clock skew problem, so that's how I've been
> running.  Just for my information, how might I switch timecounters?  (It
> sounds like it won't solve the problem to switch away from ACPI, but I'm
> curious).

When running without ACPI, you should use the i8254 timecounter.  Switch 
it with this command (or put it in /etc/sysctl.conf):

sysctl kern.timecounter.hardware="i8254"

-- 
-Nate