Hi ben,
zero (0)
root@arm:/sys/class/net/eth1/statistics# cat tx_dropped
0
if you want all the stats...
root@arm:/sys/class/net/eth1/statistics# cat *
0
0
2436387
0
0
12
5
0
0
5
0
0
13880
0
4856185
0
0
0
0
0
0
76248
0
although here's the ovs-dpctl -s show once more:
port 4: eth1
RX packets:13856 errors:5 dropped:12 overruns:0 frame:0
TX packets:76282 errors:0 dropped:34299 aborted:0 carrier:0
collisions:0
RX bytes:2625108 (2.5 MiB) TX bytes:4552367 (4.3 MiB)
thanks for your time
sam
> Date: Fri, 19 Sep 2014 10:07:52 -0700
> From: b...@nicira.com
> To: sam.anda...@hotmail.com
> CC: discuss@openvswitch.org; d...@openvswitch.org
> Subject: Re: [ovs-dev] debugging OVS
>
> What's in /sys/class/net/eth1/statistics/tx_dropped?
>
> On Fri, Sep 19, 2014 at 11:40:25AM -0400, samantha Andares wrote:
> > 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: discuss@openvswitch.org; d...@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: discuss@openvswitch.org; d...@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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