bhyve+windows 7 multicore performance

[Wojciech Puchar]

>>
>>
>> i run bhyve VM like this:
>> nice -n -20 /usr/sbin/bhyve -s 0,hostbridge -m 22528M \
> ^^^^^^^^^^^^  why?

to make sure VM will not be slower down too much if i put other high load 
on host site.

>
>>
>> But windows feels quite slower that it was before. There is for sure no
>> problem with I/O performance. It's about compute speed.
>
> How did you measure this?  If it is just a "feel" then it could
> be almost anything, if you have some solid numbers to look at
> then perhaps some conclusions can be made.
>
>> What i do wrong?
>
> Try 4 cores, and drop the priority boost, you may be causeing

Well i need more cores than 4 for that VM.
I will try even number (10) and no nice.

> an unintended side effect.




>
> Did you copy the windows 7 from the old server, or is this
> a new install to the VM.  If you copied it there may be a
> HAL issue/missmatch.
Copied, and installed missing drivers.

I didn't install windoze for over 5 years :)