Greetings, My openstack grizzly cluster runs on ubuntu 12.04 servers with 10G NICs. I have ubuntu, centos and windows 2008 R2 guests. I've noticed that while both my linux guests can communicate at some reasonable approximation of 10G wire speed (e.g., 7-9Gb/sec on iperf tests), the windows guests max out at 2.5G when talking to the host on which they run, down to ~1.2G to other hosts.
I've made some modifications as per this doc: http://www.linux-kvm.org/page/WindowsGuestDrivers/kvmnet/registry and upgraded my virtio network driver, but it's not helped. I've also done about an hour or two of googling which has revealed little. I understand that this is not an openstack issue, but, I suspect, others have encountered this when bringing 2008 R2 guests into their clusters. Anyone? Thanks much, JR _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : [email protected] Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
