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" <gior...@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: >>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>>> [1] [1] >>>>> Post to : openstack@lists.openstack.org [2] [2] >>>>> Unsubscribe : >>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>>> [3] [3] >>>>> >>>> >>>> Links: >>>> ------ >>>> [1] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>> [4] >>>> [2] mailto:openstack@lists.openstack.org [5] >>>> [3] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>> [6] >>>> [4] mailto:gior...@acmac.uoc.gr [7] >>>> >>> >> >> Links: >> ------ >> [1] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> [2] mailto:openstack@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@lists.openstack.org >> [6] http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> [7] mailto:gior...@acmac.uoc.gr >> [8] mailto:gior...@acmac.uoc.gr >> >
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