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: 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? > > > > _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
