SOLVED: Time Clock Stops in FreeBSD 9.0 guest running under ESXi 5.0

[Mark Saad]

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On Aug 3, 2012, at 3:59 AM, Adam Strohl <adams-freebsd at ateamsystems.com> wrote:

> Doh, correct URL for the forum post is:
> http://forums.freebsd.org/showthread.php?t=31929&page=2
> 
> On 8/3/2012 14:38, Adam Strohl wrote:
>> Just a heads up on the original issue, which is FreeBSD's timer/clock
>> stopping under ESXi 5.0 and some later versions of VMware Workstation.
>> 
>> I've gotten a few direct messages that this thread ranks high on Google
>> but people are missing the solution.  A few months ago I found this
>> forum posting (I believe this was linked in this thread already)
>> http://unix.derkeiler.com/Mailing-Lists/FreeBSD/stable/2012-03/msg00201.html
>> 
>> 
>> The long and short of it is that changing the kern.timecounter sysctl
>> value to ACPI-fast or (ACPI-safe if you're not running 9.x yet) fixes
>> the hanging issue so far for us.
>> 
>> To temporarily enable it under 9.x:
>> sysctl kern.timecounter.hardware=ACPI-fast
>> 
>> Pre 9.x (which doesn't have the ACPI-fast mode):
>> sysctl kern.timecounter.hardware=ACPI-safe
>> 
>> To make this persist across reboots and be enabled by default add this
>> line to your /etc/sysctl.conf
>> 
>> Under 9.x:
>> kern.timecounter.hardware=ACPI-fast
>> 
>> Pre 9.x:
>> kern.timecounter.hardware=ACPI-safe
>> 
>> Hope this helps anyone running across this issue.
>> 
> 
> 
> -- 
> Adam Strohl
> http://www.ateamsystems.com/
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Did you ask VMware to update this kb ?

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006427

They need to have a FreeBSD section . 

It's slightly sad VMware could. It figure this out . They have notes on disabling hpet due to screwy clock issues under Linux , wonder why they never tried to disable it under FreeBSD  ?

---
Mark saad | mark.saad at longcount.org