Like Jesse pointed out the numbers should be much better with offload. Here are the numbers I see. My offload card is an eval card and is messing up some packets. I am going to try it with latest firmware and update the slides.
http://www.slideshare.net/MadhusudanChalla/ovs-perf Thanks. On Mon, Nov 17, 2014 at 9:18 AM, Rukhsana Ansari < rukhsana.ans...@oneconvergence.com> wrote: > Here are two old links that provide perf numbers with OVS GRE/VxLAN > tunnels: > http://networkheresy.com/2012/06/08/the-overhead-of-software-tunneling/ > http://networkstatic.net/configuring-vxlan-and-gre-tunnels-on-openvswitch/ > > With br MTU= 8900 bytes, the bare-metal OVS-vxlan numbers I see is 5.3 > Gbps with a single iperf thread and 9.3 Gbps with 2 iperf threads. > > > -Rukhsana > > On Thu, Nov 13, 2014 at 9:04 AM, Rukhsana Ansari < > rukhsana.ans...@oneconvergence.com> wrote: > >> Hi >> >> On Thu, Nov 6, 2014 at 7:27 AM, Jesse Gross <je...@nicira.com> wrote: >> >>> 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. >>> >>> >> I have seen similar numbers (2.3 Gbps), with bare-metal Linux and OVS 2.0 >> with vxlan encap - >> with Intel 82599 on Ubuntu 14.04. >> MTU of bridge with vxlan port was set to 1400 bytes. >> Do we have reference data that 2+ Gbps number is the expected perf for a >> NIC that does not support VxLAN offloads? >> This older link shows 4+ Gbps with 1500 byte MTU for bare-metal vxlan >> perf with OVS (1.8.9): >> http://networkstatic.net/configuring-vxlan-and-gre-tunnels-on-openvswitch/ >> >> Thanks >> > > > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss > >
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