On Wed, Nov 5, 2014 at 10:58 PM, FengYu LeiDian <fengyuleidian0...@gmail.com> wrote: > 于 2014年11月06日 00:08, Jesse Gross 写道: > >> On Tue, Nov 4, 2014 at 11:03 PM, FengYu LeiDian >> <fengyuleidian0...@gmail.com> wrote: >>> >>> Hi >>> >>> Env: redhat 6.4, OpenvSwitch-2.1.2, using native >>> datapath/linux/openvswitch.ko module >>> >>> VM1 on host1, VM2 on host2, host1 and host2 are connected by a switch. >>> both VM enable virtio/vhost when launching VM >>> >>> case1: >>> VM -> tap -> ovs-bridge -> eth1 >>> >>> case2: >>> VM -> tap -> ovs-bridge -> vxlan -> eth1 >>> >>> When using vxlan in case2, iperf performance drop 60%, >> >> >> Your NIC probably doesn't support offloads (checksum, TSO, etc.) in >> the presence of VXLAN. > > > This is the default features supported by my NIC 82599 both in case1 and > case2.
I can assure you that this NIC does not support VXLAN and the stack is being forced to do segmentation in software. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
