FreeBSD as virtualbox guest not working

Harti Brandt hartmut.brandt at
Fri May 25 11:55:24 UTC 2012


On Fri, 25 May 2012, Niclas Zeising wrote:

NZ>Sometime quite recent a change to FreeBSD CURRENT makes it almost impossible
NZ>to run it as a virtualbox guest, at least under Windows.  If I roll back the
NZ>vbox machine to a (unfortunately quite old, from January) CURRENT everything
NZ>seems to be working.
NZ>The issue is that the virtual machine runs very very slow, and makes the host
NZ>almost impossible to work with, especially during compiles and other
NZ>activities involving the CPU and the disk.  I have also experienced that the
NZ>host machine crashes, but that might be unrelated.
NZ>Is anyone else experiencing this, or am I doing something very wrong?

I'm running current compiled with CLANG on the latest stable virtualbox 
under Win7. It works good, the only issue I had a couple of days ago when 
compiling world with -j4 (I've a 2-core with HTT) was that the CPUs were 
not raising their speed. They were just running on 780MHz and the 
compilation took half a day. A reboot of windows 'fixed' this. Normally if 
I do such a compile then both CPUs go up stable to 3.3GHz. I suspect that 
this is a bug in the BIOS or Windows where the frequency control gets 

NZ>Let me know if I need to provide more information or if I can help in some
NZ>other way.

Maybe first try to check with hwinfo what your CPUs are doing.


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