FreeBSD 7, runaway clock as guest OS on Microsoft Virtual Server

[Jeffrey Williams]

Hi Guys,

Well this helped sort of, the clocks are running only a little fast at 
this point (roughly seven minutes gained over 12 hours), but now for 
some reason, ntpd is not resetting the clocks at all, despite multiple 
good time sources, it was working fine before the kern.hz change.  Any 
reason why that would break ntpd?

Thanks,
Jeff



Jeffrey Williams wrote:
> Hi Guys,
>
> Ok it is set, it does seem a little better, the clocks are still 
> running ahead by an average of about 30-40 seconds, but they seem to 
> have slowed down enough for ntpd to maintain the time by slewing, 
> instead of stepping.  I did get a fresh batch of calcru errors from 
> one of the servers right after reboot (possibly because I am setting 
> kern.timecounter.hardware in sysctl.conf instead of loader.conf). I 
> will let you know how it looks after it has run for an hour or two.
>
> I tried TSC instead of i8254 on a third server, it was better than 
> ACPI-safe, but much worse than i8254.
>
> Thanks,
> Jeff
>
> Andrew Thompson wrote:
>> On Wed, Jan 21, 2009 at 12:30:26PM -0800, Jeffrey Williams wrote:
>>  
>>> Hi Guys,
>>>
>>> Thanks for kern.hz suggestion, but according loader.conf in the 
>>> /boot/defaults directory, kern.hz is already set to 100, is this 
>>> overridden somewhere else?
>>>
>>>     
>>
>> Thats a bit misleading, the commented out value isnt actually the
>> default. Set it in the loader.conf, can verify this with 'sysctl 
>> kern.hz'
>>
>>
>> Andrew
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