Poor performance with 10Gbe and open vSwitch

C

Christophe Aubry

New Member
Jun 10, 2014
9
0
1
Haut-Ittre, Brabant, Belgium, Belgium
Hi,

I'm trying to achieving a new infrastructure for our data-center, the infrastructure is composed of three nodes equipped with one dual port 10Gbe nic, first i have tested the network with native linux support and got 9.5Gbit/s in the iperf bandwidth test, now when i running the same test with ovs i got 3.5Gbit/s at maximum in the iperf bandwidth test, my ceph performances are now affected by this issue.
I use a ovs bridge connected to my physical switch via a ovs bond and the management network for all the three host is connected to a ovs internal port with tagged vlan.
 
Christophe Aubry said:
I just finished a kick test now, i configure an IP directly on the bridge without vlan and i got 7.7Gbit/s so the problem seems come from the vlan tagging
Click to expand...

which kernel do you use ? I see some similar problems with ovs + kernel 2.6.32 + vlan tag, but it's works fine with 3.10 kernel.
 
spirit said:
which kernel do you use ? I see some similar problems with ovs + kernel 2.6.32 + vlan tag, but it's works fine with 3.10 kernel.
Click to expand...

I use the kernel version 2.6.32-29-pve, all is working fine between the hosts after changing MTU to 9000 on all interfaces, i'm currently testing the bandwith between guest and i got 4.75Gbits/s but my system is under heavy load because of Ceph rebuilding a storage.
 
You must log in or register to reply here.
Top Bottom