[ovirt-users] Ovirt VM Performance abd CPU times

[Xavier Naveira]

We tried a minimal installation from CD of RedHat 5.10 and it is the same.

This should be fairly easy to reproduce:

- Install a RedHat 6.5 hypervisor
- Install a RedHat 5.10 guest in it
- Enjoy your overused CPU

Is there someone with a similar setup out there?

Xavier

On Fri, Nov 7, 2014 at 12:30 PM, Gianluca Cecchi <gianluca.cecchi at gmail.com>
wrote:

> On Fri, Nov 7, 2014 at 10:48 AM, Xavier Naveira <xnaveira at gmail.com>
> wrote:
>
>> Hi,
>>
>> We have installed and added a new hypervisor into the ovirt cluster but
>> this time with disabled HT.
>>
>> I migrated a RedHat 5.10 machine to it and immediately the qemu-kvm
>> process running the vm (freshly installed, just basic packages) began to
>> consume 20-40% CPU as showed running top on the hypervisor.
>>
>> Now that I have a hypervisor to run tests in, what would you suggest the
>> next step is?
>>
>> Thank you.
>>
>> Xavier
>>
>>
>>
> If I remember correctly you had to test plain Qemu/KVM on CentOS 6.5 and
> see if the difference is made by oVirt itself or by the OS changed from 5.x
> to 6.y...
> And also compare command line (eventually both in 5.x and 6.x) between
> plain Qemu/KVM and oVirt spawned VMs
> Gianluca
>
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