Open Stack

Disabling it only on the nodes should boost the speed but disabling it in
the vms too improves greatly the speed
El 16/12/2014 19:13, "Georgios Dimitrakakis" <giorgis at acmac.uoc.gr>
escribió:

> Ooops...It seems that I have been confused..
>
> The pasted part is indeed from the node when I was looking somewhere
> else....
>
> Thanks a lot for noticing that Adrian!!!!
>
> I will turn it off on the nodes and test again!
>
> Should it be off on both the nodes and the VMs?
>
> Regards,
>
> George
>
>
>  That shows that those 3 offload settibgs are enabled.
>> El 16/12/2014 19:01, "Georgios Dimitrakakis"  escribió:
>>
>>  I believe that they are already disabled.
>>>
>>> Here is the ethtool output:
>>>
>>> # ethtool --show-offload eth1
>>> Features for eth1:
>>> rx-checksumming: on
>>> tx-checksumming: on
>>>         tx-checksum-ipv4: off
>>>         tx-checksum-unneeded: off
>>>         tx-checksum-ip-generic: on
>>>         tx-checksum-ipv6: off
>>>         tx-checksum-fcoe-crc: off [fixed]
>>>         tx-checksum-sctp: off [fixed]
>>> scatter-gather: on
>>>         tx-scatter-gather: on
>>>         tx-scatter-gather-fraglist: off [fixed]
>>> tcp-segmentation-offload: on
>>>         tx-tcp-segmentation: on
>>>         tx-tcp-ecn-segmentation: off
>>>         tx-tcp6-segmentation: on
>>> udp-fragmentation-offload: off [fixed]
>>> generic-segmentation-offload: on
>>> generic-receive-offload: on
>>> large-receive-offload: off [fixed]
>>> rx-vlan-offload: on [fixed]
>>> tx-vlan-offload: on [fixed]
>>> ntuple-filters: off [fixed]
>>> receive-hashing: off [fixed]
>>> highdma: on [fixed]
>>> rx-vlan-filter: off [fixed]
>>> vlan-challenged: off [fixed]
>>> tx-lockless: off [fixed]
>>> netns-local: off [fixed]
>>> tx-gso-robust: off [fixed]
>>> tx-fcoe-segmentation: off [fixed]
>>> tx-gre-segmentation: off [fixed]
>>> tx-udp_tnl-segmentation: off [fixed]
>>> fcoe-mtu: off [fixed]
>>> loopback: off [fixed]
>>>
>>> Regards,
>>>
>>> George
>>>
>>>  Disable offloading on the nodes with: ethtool -K interfaceName gro
>>>> off
>>>> gso off tso off
>>>>
>>>> And then try it again
>>>> El 16/12/2014 18:36, "Georgios Dimitrakakis"  escribió:
>>>>
>>>>  Hi all!
>>>>>
>>>>> In my OpenStack installation (Icehouse and use nova legacy
>>>>> networking) the VMs are talking to each other over a 1Gbps
>>>>> network
>>>>> link.
>>>>>
>>>>> My issue is that although file transfers between physical
>>>>> (hypervisor) nodes can saturate that link transfers between VMs
>>>>> reach very lower speeds e.g. 30MB/s (approx. 240Mbps).
>>>>>
>>>>> My tests are performed by scping a large image file (approx.
>>>>> 4GB)
>>>>> between the nodes and between the VMs.
>>>>>
>>>>> I have updated my images to use e1000 nic driver but the
>>>>> results
>>>>> remain the same.
>>>>>
>>>>> What are any other limiting factors?
>>>>>
>>>>> Does it has to do with the disk driver I am using? Does it play
>>>>> significant role the filesystem of the hypervisor node?
>>>>>
>>>>> Any ideas on how to approach the saturation of the 1Gbps link?
>>>>>
>>>>> Best regards,
>>>>>
>>>>> George
>>>>>
>>>>> _______________________________________________
>>>>> Mailing list:
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>>>>> [1] [1]
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>>>>> [3] [3]
>>>>>
>>>>
>>>> Links:
>>>> ------
>>>> [1] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>> [4]
>>>> [2] mailto:openstack at lists.openstack.org [5]
>>>> [3] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>>>> [6]
>>>> [4] mailto:giorgis at acmac.uoc.gr [7]
>>>>
>>>
>>
>> Links:
>> ------
>> [1] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> [2] mailto:openstack at lists.openstack.org
>> [3] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> [4] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> [5] mailto:openstack at lists.openstack.org
>> [6] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
>> [7] mailto:giorgis at acmac.uoc.gr
>> [8] mailto:giorgis at acmac.uoc.gr
>>
>
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