Open Stack

 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
>>>>
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>>>
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>
>
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