That shows that those 3 offload settibgs are enabled. El 16/12/2014 19:01, "Georgios Dimitrakakis" <gior...@acmac.uoc.gr> 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] >>> Post to : openstack@lists.openstack.org [2] >>> Unsubscribe : >>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack [3] >>> >> >> >> 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] mailto:gior...@acmac.uoc.gr >> > >
_______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
