This probably goes back to when there were problems with certain kernels that would lock up when attaching volumes with virtio enabled. There still may be issues with Windows images that don't have the right drivers installed. -todd[1] On Thu, Oct 27, 2011 at 9:33 PM, Yun Mao <yunmao at gmail.com> wrote: > Is there a reason that libvirt_use_virtio_for_bridges is not set to > True by default? Without virtio the network performance in kvm is > ridiculously slow.. Thanks, > > Yun > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack at lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp >