Hello An, I tired reproducing the issue you reported, unfortunately I couldn't reproduce it on my setup. I am using DPDK datapath and OVS Master. I have increased the number of flows and tried at different rates(made sure no packet drops happen) and found the stats always correct.
Ouput: cookie=0x0, duration=537.652s, table=0, n_packets=1300000, n_bytes=78000000, idle_age=107, priority=50000,ip,in_port=1,nw_src=2.1.1.38,nw_dst=1.1.25.39 actions=output:2 cookie=0x0, duration=536.761s, table=0, n_packets=3900000, n_bytes=234000000, idle_age=107, in_port=1 actions=output:2 The flow rule set at a much higher priority(50000) to handle packets with above src/dst accounts all the packets correctly and I confirmed from my IXIA settings. All other packets are handled by other flow rule that forwards packets received on port 1 to port2. Regards, Bhanu Prakash. >-----Original Message----- >From: awan...@masonlive.gmu.edu [mailto:awan...@masonlive.gmu.edu] >Sent: Wednesday, August 10, 2016 2:55 PM >To: Bodireddy, Bhanuprakash <bhanuprakash.bodire...@intel.com>; >discuss@openvswitch.org >Subject: 答复: help - ovs 2.5 flow statistics issues > >Hi, Bhanu, > >I could still observe the issue. Please keep me in the loop if you have any >updates. > >Thanks, An >________________________________________ >发件人: awan...@masonlive.gmu.edu >发送时间: 2016年8月4日 1:14:57 >收件人: Bodireddy, Bhanuprakash; discuss@openvswitch.org >主题: 答复: help - ovs 2.5 flow statistics issues > >Hi, Bhanu, > >In my case, I don't think it is the rate issue. I sent the traffic at a very >low rate >(~0.7 Mbps) and the statistics are still not correct. >Also, in my trace for the test, traffic belonging 10.0.0.0/8 -> 81.0.0.0/8 only >serves a small portion. >The total statistics combined together are correct, e.g. the results I >observed: > >NXST_FLOW reply (xid=0x4): >cookie=0x0, duration=2.183s, table=0, n_packets=12, n_bytes=2083, >idle_age=2, priority=50000,ip, in_port=1,nw_src=10.0.0.0/8 actions=output:2 >cookie=0x0, duration=10.829s, table=0, n_packets=2328320, >n_bytes=216980958, idle_age=10, in_port=1 actions=output:2 > >The sum of 12 and 2328320 is correct. However, there should be 2075 packets >belonging to 10.0.0.0/8 -> 81.0.0.0/8. >After looking into the kernel flow table, I found that in the beginning, masked >key 10.0.0.0/255.0.0.0 -> 81.0.0.0/255.0.0.0 was installed and packets were >processed fine. >But after a while, this masked key will be removed by the revalidator >thread due to the mismatches of the flows in the kernel table. >So my guess is that either I misconfigured the kernel flow table or there is >something wrong with the kernel. >Could you please help further verify this? Appreciate your help! > >Thanks, >An > > > >________________________________________ >发件人: Bodireddy, Bhanuprakash <bhanuprakash.bodire...@intel.com> >发送时间: 2016年8月3日 17:55:44 >收件人: awan...@masonlive.gmu.edu; discuss@openvswitch.org >主题: RE: help - ovs 2.5 flow statistics issues > >>-----Original Message----- >>From: awan...@masonlive.gmu.edu >[mailto:awan...@masonlive.gmu.edu] >>Sent: Monday, August 1, 2016 3:49 PM >>To: Bodireddy, Bhanuprakash <bhanuprakash.bodire...@intel.com>; >>discuss@openvswitch.org >>Subject: 答复: help - ovs 2.5 flow statistics issues >> >>Thank you, Bhanu, for your verification. I really appreciate it! >>Please keep me updated if you figure out the root cause of this problem. > >Can you reduce the packet rate and reverify the stats. I don’t see a problem >with stats when adjusted my packet rate. > >Regards, >Bhanu Prakash. > >> >>Thanks, An >>________________________________________ >>发件人: Bodireddy, Bhanuprakash <bhanuprakash.bodire...@intel.com> >>发送时间: 2016年8月1日 22:43:37 >>收件人: awan...@masonlive.gmu.edu; discuss@openvswitch.org >>主题: RE: help - ovs 2.5 flow statistics issues >> >>>-----Original Message----- >>>From: awan...@masonlive.gmu.edu >>[mailto:awan...@masonlive.gmu.edu] >>>Sent: Monday, August 1, 2016 12:52 PM >>>To: Bodireddy, Bhanuprakash <bhanuprakash.bodire...@intel.com>; >>>discuss@openvswitch.org >>>Subject: 答复: help - ovs 2.5 flow statistics issues >>> >>>Hi, Bhanu, >>> >>>Thank you for your response! I tried it with the master branch and it works! >I >>>guess it is a problem with the 2.5.0 version. >>>But I noticed that the statistics are actually wrong in my case even though I >>>could see the counts. >> >>You are right, the stats doesn't seem accurate in my case too. >>I tested it by sending 100k packets for 5 runs and below is 'n_packets' count >in >>dump-flows output. >> >> Reported | Actual >>97206 | 100,000 >>97833 | 100,000 >>97954 | 100,000 >>98334 | 100,000 >>98017 | 100,000 >> >>Regards, >>Bhanu Prakash. >> >>>Could you please help verify if you have obtained accurate results for your >>>case? >>> >>>Thanks, >>>An >>>________________________________________ >>>发件人: Bodireddy, Bhanuprakash <bhanuprakash.bodire...@intel.com> >>>发送时间: 2016年8月1日 15:59:13 >>>收件人: awan...@masonlive.gmu.edu; discuss@openvswitch.org >>>主题: RE: help - ovs 2.5 flow statistics issues >>> >>>>-----Original Message----- >>>>From: discuss [mailto:discuss-boun...@openvswitch.org] On Behalf Of >>>>awan...@masonlive.gmu.edu >>>>Sent: Wednesday, July 27, 2016 3:14 PM >>>>To: discuss@openvswitch.org >>>>Subject: [ovs-discuss] help - ovs 2.5 flow statistics issues >>>> >>>>Hi, All, >>>> >>>>I am running openvswitch 2.5.0 on Ubuntu 14.04 LTS with kernel 3.13.0-92- >>>>generic. >>>>I installed the two following rules to the switch: >>>> >>>>NXST_FLOW reply (xid=0x4): >>>> cookie=0x0, duration=2.183s, table=0, n_packets=0, n_bytes=0, >>idle_age=2, >>>>priority=50000,ip,in_port=1,nw_src=10.0.0.0/8,nw_dst=81.0.0.0/8 >>>>actions=output:2 >>>> cookie=0x0, duration=10.829s, table=0, n_packets=0, n_bytes=0, >>>>idle_age=10, in_port=1 actions=output:2 >>>> >>>>Another host machine connecting to the switch generates traffic >(including >>>>10.0.0.0/8 -> 81.0.0.0/8) that goes through the switch. >>>>However, the statistics were not be updated correctly with n_packets for >>>the >>>>higher priority rule remaining 0 while all the traffic statistics being >>>>credited >>to >>>>the lower priority rule. >>>>But if I modify the rules to be: >>>> >>>>NXST_FLOW reply (xid=0x4): >>>> cookie=0x0, duration=2.183s, table=0, n_packets=0, n_bytes=0, >>idle_age=2, >>>>priority=50000,ip,in_port=1,nw_src=10.0.0.0/8 actions=output:2 >>>> cookie=0x0, duration=10.829s, table=0, n_packets=0, n_bytes=0, >>>>idle_age=10, in_port=1 actions=output:2 >>>> >>>>Then it works fine. So it seems that statistics with both nw_src and nw_dst >>>>matching do not work properly? >>> >>>I don't see an issue matching both nw_src & nw_dst and can see the >>>'n_packets', 'n_bytes' entry incremented for all matching packets. I quickly >>>verified this on master branch. >>> >>>NXST_FLOW reply (xid=0x4): >>> cookie=0x0, duration=430.063s, table=0, n_packets=2109130027, >>>n_bytes=126547801620, idle_age=9, >>>priority=50000,ip,in_port=1,nw_src=2.0.0.0/8,nw_dst=3.0.0.0/8 >>>actions=output:2 >>> cookie=0x0, duration=428.842s, table=0, n_packets=0, n_bytes=0, >>>idle_age=428, in_port=1 actions=output:2 >>> >>>Regards, >>>Bhanu Prakash. >>> >>> Or did I misconfigure something? >>>>I'd really appreciate your help! >>>> >>>>Thanks, >>>>An _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
