Ok
So i can still benefit from haswell performance?

/Christian

2015-12-18 14:51 GMT+01:00 Simone Tiraboschi <stira...@redhat.com>:

>
>
> On Fri, Dec 18, 2015 at 1:02 PM, gflwqs gflwqs <gfl...@gmail.com> wrote:
>
>> Hi,
>> I have registered a new DELL R730 machine in ovirt 3.5.6 this server type
>> has a Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz.
>> When i try to add a the new host to a cluster with a haswell architecure
>> i get an error:
>> "Host xxx moved to Non-Operational state as host does not meet the
>> cluster's minimum CPU level. Missing CPU features : model_Haswell"
>>
>> When i look at the hardware tab on the host it says:
>> CPU Model: Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz
>> and
>> CPU Type: Intel SandyBridge Family
>>
>> This is not a SandyBridge Family processor?
>>
>> When i change the cluster to be a SandyBridge Family cluster the host can
>> be activated.
>>
>> What are my options?
>> - Is it a bug i can get a fix for? (I can't upgrade to 3.6)
>> - Can i  force it to report correctly?
>> - What am i loosing in terms of functionality/performance if ovirt thinks
>> its a SandyBridge processor?
>>
>>
> It's a bugged Haswell CPU where the TSX feature has been hardware disabled
> by Intel with a microcode upgrade due to an hardware bug:
>
> http://www.anandtech.com/show/8376/intel-disables-tsx-instructions-erratum-found-in-haswell-haswelleep-broadwelly
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1218673
>
> You loosed the TSX feature (Transactional Synchronization eXtensions).
>
>
>
>> Thanks!
>> /Christian
>>
>>
>>
>>
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>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
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