Slowness with Virtualbox

[Patrick Powell]

On 11/02/15 11:49, Ranjan1018 . wrote:
> 2015-11-02 19:45 GMT+01:00 Christer Solskogen <christer.solskogen at gmail.com>
> :
>
>> On 02.11.2015 18.29, Richard Kuhns wrote:
>>
>>> How many cores on your physical box?
>>>
>>> I have a 6 core Dell precision 7810. If hyperthreading is enabled (so
>>> FreeBSD apparently thinks I have 12 cores), and VMs running under
>>> VirtualBox are so slow as to be totally unusable. If I disable
>>> hyperthreading, VMs are still extremely slow but usable in case of
>>> emergency.
>>>
>>>
>> Yes, HT is enabled. I have six cores as well. Pretty sure we're facing the
>> same issue. I've never tried with HT disabled, however.
>>
>> --
>> chs
>
> You may not use the core 0 (cpu0 and cpu1) with the VMs, I use the
> CPUSET(1) command to do it. Eg. to start a Windows 7 VM in headless mode I
> use the command:
> #  cpuset -l 4-7 /usr/local/lib/virtualbox/VBoxHeadless --comment
> "Win7;5901" --startvm "Win7;5901"
>
> Regards,
> Maurizio
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Ummm... speaking from ignorance here,  but why is this important or 
effects the operation?

-- 
Patrick Powell                 Astart Technologies
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