Hi,

I've been doing some testing with Microsoft Virtual Server 2005 R2 and FreeBSD, 
so far compatibility has been great across the board with all versions of 
FreeBSD from 4.x - 7.x on IDE based virtual drives (no compatibility with SCSI 
driver).

However, on FreeBSD 5.x I noticed the CPU detected by FreeBSD is half of the 
actual CPU available (e.g. the machine has 6 x 900MHz CPUs and each VM is 
assigned a 900MHz CPU), yes FreeBSD 5.x detects the CPU frequency at 400-498MHz 
no matter what settings I try to change and what options I've added to the 
kernel. This usually resulted in "time went backward" errors and significant 
performance impact.

I tried FBSD 7.x-CURRENT and the CPU was detected perfectly fine as P-III 
900MHz and performance was much better improved. 

Results were obtained through:

> sysctl hw.clockrate

I've left notes on this matter at freebsd-questions:
http://lists.freebsd.org/pipermail/freebsd-questions/2006-January/111628.html


Any advise or check on this is appreciated, I can provide access to the VM 
machines if wanted.

Thx,

Tamouh Hakmi


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