Ben,
Here is the output of the physical interface
eth1 Link encap:Ethernet HWaddr 00:0e:c6:88:d2:22
inet6 addr: fe80::20e:c6ff:fe88:d222/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1538 errors:0 dropped:12 overruns:0 frame:0
TX packets:63290 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:270154 (270.1 KB) TX bytes:2966862 (2.9 MB)
and you can see there are no dropped count in there!
sam
> Date: Fri, 19 Sep 2014 08:33:27 -0700
> From: b...@nicira.com
> To: sam.anda...@hotmail.com
> CC: disc...@openvswitch.org; dev@openvswitch.org
> Subject: Re: [ovs-dev] debugging OVS
>
> Can you show us the "ovs-dpctl show" output?
>
> Thanks,
>
> Ben.
>
> On Fri, Sep 19, 2014 at 11:30:05AM -0400, samantha Andares wrote:
> > hi ben,
> >
> > thanks for your feedback.
> >
> > I am getting 100% packets drop.. If problem was with the amount of
> > messages... I presume some would have been going through... as stated in my
> > latest email.... this is specific to when going out on a USB to Ethernet
> > adaptor on a specific hardware (beagle bone board). I am using OVS 2.0 and
> > Ubuntu 14.04. How can we analyse the messages in userspace and why would
> > the message go to userspace... shouldn't it stay in kernel space if it
> > matches a flow and just be forwarded to the outgoing physical port as per
> > the rule is saying? My traffic is simple iperf udp messages.. tried flow of
> > 10MB and 100KB... problem is the same...
> >
> > thanks,
> >
> > sam
> >
> > > Date: Fri, 19 Sep 2014 08:20:24 -0700
> > > From: b...@nicira.com
> > > To: sam.anda...@hotmail.com
> > > CC: disc...@openvswitch.org; dev@openvswitch.org
> > > Subject: Re: [ovs-dev] debugging OVS
> > >
> > > [dropping mininet-discuss because it is a closed mailing list and I am
> > > not a subscriber]
> > >
> > > On Thu, Sep 18, 2014 at 05:37:43PM -0400, samantha Andares wrote:
> > > > I am getting packets dropped when going out of an OVS bridge. The TX
> > > > dropped is increased in ovs-dpctl but not at the physical interface
> > > > level (ifconfig).
> > > >
> > > > Can anyone tell me how to enable some OVS debugging so I can find the
> > > > reason to fix that problem?
> > >
> > > Do you mean that ovs-dpctl shows the datapath's "drop" count is going
> > > up? If so, the problem is that packets that need attention from
> > > userspace are arriving faster than userspace can process them. The best
> > > way to reduce drops is to upgrade to the latest version of Open vSwitch,
> > > which is 2.3, because we've spent a lot of time the last few years
> > > coming up with ways to reduce the number of packets that have to be sent
> > > to userspace. If you are already using 2.3, then I am surprised that
> > > you are seeing lots of drops. Is there anything unusual about your
> > > environment or the traffic that you are using?
> >
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