I haven't got to the stage to apply the patch yet.. Still working on some
server build issues here. Will try it and let you know. Can't spot anything
obviously wrong :-(


On Thu, Sep 19, 2013 at 4:30 PM, Kevin Bringard
<email address hidden>wrote:

> I'm running grizzly with OVS 1.10... so I had to make some changes to
> the patches to get them to work (I've attached them in one file), but I
> don't seem to see any improvement...
>
> Prior to patching I have the following on my integration bridge:
>
> f9b838db-e402-47f0-923d-81ad66f3cf7f
>     Bridge br-int
>         Port patch-tun
>             Interface patch-tun
>                 type: patch
>                 options: {peer=patch-int}
>         Port "qvo4912548e-43"
>             tag: 1
>             Interface "qvo4912548e-43"
>         Port br-int
>             Interface br-int
>                 type: internal
>         Port "qvod855ae25-7d"
>             tag: 1
>             Interface "qvod855ae25-7d"
>
>
> After patching (and rebooting to make sure everything got cleaned up, I
> have the following:
>
>
> f9b838db-e402-47f0-923d-81ad66f3cf7f
>     Bridge br-int
>         Port patch-tun
>             Interface patch-tun
>                 type: patch
>                 options: {peer=patch-int}
>         Port "qvm4912548e-43"
>             tag: 1
>             Interface "qvm4912548e-43"
>                 type: internal
>         Port br-int
>             Interface br-int
>                 type: internal
>         Port "qvmd855ae25-7d"
>             tag: 1
>             Interface "qvmd855ae25-7d"
>                 type: internal
>
> brctl show has the following before:
>
> bridge name     bridge id               STP enabled     interfaces
> qbr4912548e-43          8000.b60b11b69407       no
>  qvb4912548e-43
>                                                         tap4912548e-43
> qbrd855ae25-7d          8000.5aaf731c719e       no
>  qvbd855ae25-7d
>                                                         tapd855ae25-7d
>
> and after:
>
> bridge name     bridge id               STP enabled     interfaces
> qbr4912548e-43          8000.b60b11b69407       no
>  qvm4912548e-43
>                                                         tap4912548e-43
> qbrd855ae25-7d          8000.5aaf731c719e       no
>  qvmd855ae25-7d
>                                                         tapd855ae25-7d
>
> So we can see that the veth pair is in fact eliminated. My VMs boot and
> can talk to each other, but my speed has not improved. VM to VM on the
> same host is approximately 1.5Gbit/s, both before and after:
>
> [SUM]  0.0-30.0 sec  5.14 GBytes  1.47 Gbits/sec
>
> Any thoughts, or perhaps something I've missed?
>
> ** Patch added: "bug-1223267.patch"
>
> https://bugs.launchpad.net/nova-project/+bug/1223267/+attachment/3830251/+files/bug-1223267.patch
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1223267
>
> Title:
>   ovs plugin performance issue
>
> Status in The Nova Project:
>   Confirmed
>
> Bug description:
>   To enable security groups which is based on iptables, we configured
>   hybrid vif-driver when using ovs plugin in our DC.
>
>   During networking performance test, there is a distinct bandwidth
>   loss.
>
>   Test scenario:  2 VM resides on the same compute node, and they belong
>   to the same L2 network. When using hybrid vif-driver
>   (LibvirtHybridOVSBridgeDriver), throughput is 2.34Gb/s. When using
>   common vif-driver(LibvirtOpenVswitchVirtualPortDriver), throughput is
>   12.7Gb/s.
>
>   Probably we should consider this bandwidth loss, and figure out a
>   solution. Thanks.
>
>   Test result:
>   **************************************
>   root@vm-A-1:~# iperf -s
>   ------------------------------------------------------------
>   Server listening on TCP port 5001
>   TCP window size: 85.3 KByte (default)
>   ------------------------------------------------------------
>   [  4] local 128.100.200.66 port 5001 connected with 128.100.200.44 port
> 35483
>   [ ID] Interval       Transfer     Bandwidth
>   [  4]  0.0-180.0 sec  49.0 GBytes  2.34 Gbits/sec
>
>
>   root@vm-A-1:~# iperf -s
>   ------------------------------------------------------------
>   Server listening on TCP port 5001
>   TCP window size: 85.3 KByte (default)
>   ------------------------------------------------------------
>   [  4] local 128.100.200.33 port 5001 connected with 128.100.200.22 port
> 41452
>   [ ID] Interval       Transfer     Bandwidth
>   [  4]  0.0-180.0 sec   267 GBytes  12.7 Gbits/sec
>
>
>
>   **************************************
>   Bug #1039400
>
>   https://bugs.launchpad.net/neutron/+bug/1039400
>
>       - Add a vif-driver that is a hybrid of the existing Open vswitch +
>       linux bridge drivers, which allows OVS quantum plugins to
>       be compatible with iptables based filtering, in particular, nova
>       security groups.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/nova-project/+bug/1223267/+subscriptions
>