[one-users] cpu overcommit with kvm

Tino Vazquez tinova at opennebula.org
Mon May 9 05:18:47 PDT 2011


Hi Carlos,

Which bug are you referring to? AFAIK, the CPU parameter is only used
by the scheduler, and the VMware integration does honor the VCPU
paremeter, so overcommitment should work as expected.

Regards,

-Tino

--
Constantino Vázquez Blanco, MSc
OpenNebula Major Contributor
www.OpenNebula.org | @tinova79



On Wed, May 4, 2011 at 6:57 PM, Carlos A. <caralla at upv.es> wrote:
> there was a bug about the CPU template parameter that was not working for
> vmware so it was needed to use VCPU instead. Thus, I have no way to manage
> the overcommitment of VMs to a host.
>
> Is this issue solved in the current version? (i have noticed that memory
> issues are supposed to be (partially) patched)
>
> El 04/05/2011 18:39, Ruben S. Montero escribió:
>
> Hi,
> You can guide the overcommitment by using the CPU attribute of the template.
> For example if you want to put 16 VMs in nebula02 with 8 cores, just define
> the VMs with
> CPU = 0.5
> If you need those VMs to have 2 virtual cores use:
> CPU=0.5
> VCPU=2
> Cheers
> Ruben
>
> On Wed, May 4, 2011 at 4:32 PM, Giovanni Toraldo <gt at libersoft.it> wrote:
>>
>> Hi,
>>
>> I noticed only now that I've exhausted my opennebula available CPU
>> resources:
>>
>> >   ID NAME              CLUSTER  RVM   TCPU   FCPU   ACPU    TMEM    FMEM
>> > STAT
>> >    2 nebula01          default    2    400    369      0   11.8G   10.7G
>> >   on
>> >    3 nebula02          default    4    800    792      0   11.8G    7.4G
>> >   on
>> >    4 nebula03          default    4    800    796      0   11.8G    9.9G
>> >   on
>> >    5 nebula04          default    4    800    774      0   11.8G   10.4G
>> >   on
>>
>> However CPU isn't really used so much. There is a way to let the
>> scheduler allocate new VM? I supposed that using RANK = FREEMEMORY in VM
>> template should solve, but not.
>>
>> Any hints?
>>
>> --
>> Giovanni Toraldo
>> http://www.libersoft.it/
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opennebula.org
>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>
>
>
>
> --
> Dr. Ruben Santiago Montero
> Associate Professor (Profesor Titular), Complutense University of Madrid
>
> URL: http://dsa-research.org/doku.php?id=people:ruben
> Weblog: http://blog.dsa-research.org/?author=7
>
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>
>
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>



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