[ovirt-users] engine-reports portal and cpu cores

[Yaniv Dary]

On 05/13/2015 10:49 AM, Alexandr Krivulya wrote:
> Ок, I understand it. But in admin portal on hosts detail tab I see for
> example 32 logical cores vs 16 in reports because of Hyper-Threading
> enabled. All VM's on this host consumes 26 vCores. Does it
> overallocation? According to report - yes, but actually I think not.
>
> Can you clarify?
This article is good reading material for this:
http://wahlnetwork.com/2013/09/30/hyper-threading-gotcha-virtual-machine-vcpu-sizing/ 


It's still over allocation since you have more logical cores than 
physical, but it is weird that the database reports something different 
than the UI.
Eli, when hyper-threading is enabled, how is that saved in the database, 
does the UI display vale change, but the database values stay the same?


>
> 13.05.2015 10:32, Shirly Radco пишет:
>> H Alexandr,
>>
>> The vCores are the logical cpu cores,
>> and if you has more vCores than Host Cores it means that you have over allocation for the hosts.
>> So, if on a specific vm one of the cores will be on 100% usage than all the vms using this core will show 100% as well.
>>
>> Best,
>> ---
>> Shirly Radco
>> BI Software Engineer
>> Red Hat Israel Ltd.
>>
>>
>>
>> ----- Original Message -----
>>> From: "Alexandr Krivulya" <shuriku at shurik.kiev.ua>
>>> To: users at ovirt.org
>>> Sent: Tuesday, May 12, 2015 3:30:32 PM
>>> Subject: [ovirt-users] engine-reports portal and cpu cores
>>>
>>> Hello,
>>> why we have in reports host cores but not logical cpu cores? For example
>>> in "Cluster Capacity Vs. Usage" report I always have more vCores then
>>> Host Cores.
>>> Thank you.
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users

-- 
Yaniv Dary
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