CURRENT inside MS Virtual Server 2005

Hi,

To my shame, I have to admit that I'm running FreeBSD inside MS
Virtual Server 2005 :-)

4.x and 5.x run smoothly in this virtual environment, but CURRENT
spends 20-30% of CPU time in the "swi4: clock sio" thread.
Moreover, CPU idle time data look really weird.  Neither tweaking
kern.timecounter.hardware nor disabling ACPI seems to affect that.

The respective lines in the output from "top -S" reads:

   11 root     171   52     0K     8K RUN      4:10 130.18% 130.18% idle
   28 root     -32 -151     0K     8K *Giant   0:09 31.15% 31.15% swi4: clock sio

Were there any attempts to investigate this singularity?

-- 
Yar