On Fri, Dec 18, 2015 at 3:14 PM, gflwqs gflwqs <gfl...@gmail.com> wrote:
> Ok > So i can still benefit from haswell performance? > It depends: if your specific applications takes advantages on the haswell specific feature no, in general why not. > > /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 >>> >>> >>> >>> >>> _______________________________________________ >>> Users mailing list >>> Users@ovirt.org >>> http://lists.ovirt.org/mailman/listinfo/users >>> >>> >> >
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users