[Rdo-list] Slow network performance on Kilo?

[Erich Weiler]

> My first wild guess,
> it is something not OK around VLAN splinters.

Ya, that's a good idea, that's helped me before IIRC...  I tried 
enabling vlan splintering on openvswitch just now, but it didn't seem to 
help:

/usr/bin/ovs-vsctl set interface eth0 
other-config:enable-vlan-splinters=true

I ran that command on the VLAN trunkn interface on my test compute node 
running my VM, and also on the network node's two ports, the trunk on 
the inside and the external facing port.  Didn't seem to do anything. 
But maybe I'm doing it wrong?

> It can be both config or driver related issue.
>
> Just for the record, can you share these info
> - kernel version
> - ovs version (build)
> - nic (lspci -nn | grep Eth)

[root at node-170 ~]# uname -a
Linux node-170 3.10.0-229.20.1.el7.x86_64 #1 SMP Tue Nov 3 19:10:07 UTC 
2015 x86_64 x86_64 x86_64 GNU/Linux

[root at node-170 ~]# cat /etc/redhat-release
CentOS Linux release 7.1.1503 (Core)

[root at node-170 ~]# lspci -nn | grep Eth
02:00.0 Ethernet controller [0200]: Intel Corporation 82576 Gigabit 
Network Connection [8086:10c9] (rev 01)
02:00.1 Ethernet controller [0200]: Intel Corporation 82576 Gigabit 
Network Connection [8086:10c9] (rev 01)
03:00.0 Ethernet controller [0200]: Intel Corporation 82599ES 10-Gigabit 
SFI/SFP+ Network Connection [8086:10fb] (rev 01)
03:00.1 Ethernet controller [0200]: Intel Corporation 82599ES 10-Gigabit 
SFI/SFP+ Network Connection [8086:10fb] (rev 01)

> Do you use some kind of bonding ?

No bonding, just a single wire.  Thanks for the help!!!

cheers,
erich