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

[Jeffrey Williams]

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?

Thanks,
Jeff


Maxim Khitrov wrote:
> On Wed, Jan 21, 2009 at 2:41 PM, Jeffrey Williams <jeff at sailorfej.net> wrote:
>   
>> Hi Folks,
>>
>> I am trying to run FreeBSD 7 on Microsoft Virtual Server 2005 R2, Windows
>> Server 2003, on a Dell 2950.
>>
>> I am having a problem with the system clock running excessively fast, I
>> initially tried installing 7.1 release but received a nearly continuous
>> stream of the "calcru: runtime went backward errors", I tried rolling back
>> to 7.0, and it improved somewhat, but I still received regular "calcru"
>> errors, and it the system clock was running to fast for ntpd to keep up with
>> it, I set sysctl kern.timecounter.hardware to i8254 (it tries to default to
>> ACPI-safe), which helped more, ntpd is now able to keep pace with it, but
>> only barely, and I haven't seen any "calcru" errors yet.
>>
>> From the boot time dmesg, on the CPU line, the frequency reported with in
>> the parenthesizes varies on almost every reboot.
>>
>> Are there any other adjustments I can make to get this under control?
>>     
>
> Have you tried reducing the value of kern.hz (kern.hz="100" in
> /boot/loader.conf)? That fixes some clock-related problems on VMWare
> Server.
>
> - Max
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