Hi Jesse Thanks for responding. I checked this earlier and it does not add up. I looked at the delta before and after I ran the netperf test for 10s on a 10G link ( I get ~6G with my current parameters). The ifconfig numbers are in the ballpark for 10s of transmission at ~6G, but the ovs-dpctl numbers are nowhere close.
Any other clues? Thx - Kishore On Jun 7, 2013, at 5:56 PM, Jesse Gross <je...@nicira.com> wrote: > On Fri, Jun 7, 2013 at 11:46 AM, K.R Kishore <krkish...@yahoo.com> wrote: >> Hi >> I am trying to understand the statistics from ovs-dpctl and reconcile that >> with stats from other tools. I am finding it difficult to make sense of the >> numbers, perhaps someone can point me to some documentation about how this >> works? There are numerous links on the web and it is quite confusing as I am >> not sure which is authoritative. >> >> My setup is as follows: >> >> Two machines connected back-to-back via 10G NICs >> Both machines running RHEL 6.4/ wKVM; Two VMs on each, both running CentOS >> 6.4 >> OVS 1.10 installed on both; >> Created bridge (ovsbr0) and connected the VMs via macvtap (bridge mode >> -allegedly; VMM says bridge mode, but the host cannot VM and vice-versa; VMs >> can communicate with external hosts/VMs) >> >> I also have linux bridges (br0 & br1) on these VMs but they bridge the VMs >> to different physical ports (p4p1 and em1) >> >> Ran netperf (and netserver) between host1-vm1 and host2-vm1successfully; got >> stats from neperf >> >> I have attached the stats outputs from ovs-dpctl, ifconfig -a and ip -s >> link and I cannot reconcile these: >> - The port numbers do not match across these, but I can ignore that for now >> - The Rx packets and bytes from ovs-dpctl (port 2: p4p2) does not match (or >> come close to) the ipconfig -a p4p2 or 'ip -s link' (for p4p2) >> - The macvtap ports do show the traffic coming out of the VMs (I see the >> increments in the same ballpark when I run netperf and observe through ip -s >> link and ipconfig -a) >> - >> >> Is all traffic going through OVS bridge (ovsbr0)? Does ovs-dpctl count show >> something? Do I need to enable statistics somewhere? > > OVS tracks packets that have flowed through the switch since the port > was connected whereas the interface statistics show counts since boot. > My guess is that accounts for the difference. _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
