Re: [Xen-API] CloudLinux on Xen

R J
Mon, 24 Oct 2011 16:45:26 -0000

Hi Brooks,

Thanks for the reply.
I have X5650 node with 24 CPUs. This is Dual Socket Hexacore machine.

I used XenCenter to monitor the node and it showed 2 vCPUs for that DomU. I
rechecked it with vm-param-list, it showed 2.
When I checked /proc/cpuinfo in DomU, it shows 32.

Regards,
R J

On Mon, Oct 24, 2011 at 9:57 PM, <brooks@netgate.net> wrote:

>
> On Mon, 24 Oct 2011, R J wrote:
>
>  I found a strange thing in XCP. CloudLinux provides xen kernel for DomUs
>> and
>> after installing the CloudLinux in a DomU it actually got 32 cpus
inside.
>> I had assigned only 2 vCPU to that DomU. To confirm this I started
>> generating load on that DomU and in no time it ate all my
node''s CPUs.
>>
>
> How many physical CPUs do you have installed and how did you verify how
> many VCPUs your domU was allocated?  What does /proc/cpuinfo contain?
>
>
>  Is it an expected behavior that one of your DomU can eat all node with few
>> modifications in kernel ?
>> Or is Paravirt not a Hardware Virtualized guest ?
>>
>
> You might want to take a look at the docs that describe how the Credit
> Scheduler used in Xen works:
>
>