[Oisf-users] troubleshooting packet loss

Peter Manev petermanev at gmail.com
Mon Mar 28 16:47:56 UTC 2016 

> On 28 mars 2016, at 14:30, Yasha Zislin <coolyasha at hotmail.com> wrote:
> 
> I have about 2 million packets traversing per minute over 10 gig
> pipe. Averaging about 500mbits in traffic.
> Traffic is mostly LDAP, NTP, Syslog. Not really much of HTTP/S.
> 
> That packet loss starts instantly. In a few minutes, you would see it. After leaving it running over the weekend, I have 19% packet loss.
> 
> BTW, I am using dev v190 branch for this already.

What does your "detect:" section look like in suricata.yaml?

You can use the section here as a reference -
https://github.com/inliniac/suricata/blob/dev-detect-grouping-v193/suricata.yaml.in#L594
(Please note the naming and spacing)


Are you pfring buffers full ? (Or how are they configured )
How does the config section look like for pfring for the two interfaces you have?


> 
> Thanks.
> 
> > Date: Sun, 27 Mar 2016 12:00:22 +0200
> > Subject: Re: [Oisf-users] troubleshooting packet loss
> > From: petermanev at gmail.com
> > To: coolyasha at hotmail.com
> > CC: oisf-users at lists.openinfosecfoundation.org
> > 
> > On Thu, Mar 24, 2016 at 7:02 PM, Yasha Zislin <coolyasha at hotmail.com> wrote:
> > > I am trying to figure out where the packet loss is coming from on one of my
> > > Suricata 3.0 sensor.
> > > The only thing that I see weird from stats.log is that
> > > tpc.stream_depth_reached and tcp.reassembly_gap is somewhat high.
> > > I am using latest PF_RING and monitoring one interface with 4 threads.
> > > 4 logical CPUs with 16 gigs of RAM. 66% of RAM is used.
> > 
> > What traffic speeds are those on? How many rules do you load?
> > 
> > On the first interface there is 6.5% loss on the second 3.67% - over
> > what period of time was that?
> > 
> > >
> > > Here is stats.log info.
> > >
> > > Thank you
> > >
> > > capture.kernel_packets | RxPFRbond01 | 34118172
> > > capture.kernel_drops | RxPFRbond01 | 2240130
> > > decoder.pkts | RxPFRbond01 | 34125944
> > > decoder.bytes | RxPFRbond01 | 26624108366
> > > decoder.invalid | RxPFRbond01 | 0
> > > decoder.ipv4 | RxPFRbond01 | 34707873
> > > decoder.ipv6 | RxPFRbond01 | 570
> > > decoder.ethernet | RxPFRbond01 | 34125944
> > > decoder.raw | RxPFRbond01 | 0
> > > decoder.null | RxPFRbond01 | 0
> > > decoder.sll | RxPFRbond01 | 0
> > > decoder.tcp | RxPFRbond01 | 23715873
> > > decoder.udp | RxPFRbond01 | 9702569
> > > decoder.sctp | RxPFRbond01 | 0
> > > decoder.icmpv4 | RxPFRbond01 | 98456
> > > decoder.icmpv6 | RxPFRbond01 | 0
> > > decoder.ppp | RxPFRbond01 | 0
> > > decoder.pppoe | RxPFRbond01 | 0
> > > decoder.gre | RxPFRbond01 | 0
> > > decoder.vlan | RxPFRbond01 | 0
> > > decoder.vlan_qinq | RxPFRbond01 | 0
> > > decoder.teredo | RxPFRbond01 | 570
> > > decoder.ipv4_in_ipv6 | RxPFRbond01 | 0
> > > decoder.ipv6_in_ipv6 | RxPFRbond01 | 0
> > > decoder.mpls | RxPFRbond01 | 0
> > > decoder.avg_pkt_size | RxPFRbond01 | 780
> > > decoder.max_pkt_size | RxPFRbond01 | 1514
> > > decoder.erspan | RxPFRbond01 | 0
> > > flow.memcap | RxPFRbond01 | 0
> > > defrag.ipv4.fragments | RxPFRbond01 | 1190975
> > > defrag.ipv4.reassembled | RxPFRbond01 | 592903
> > > defrag.ipv4.timeouts | RxPFRbond01 | 0
> > > defrag.ipv6.fragments | RxPFRbond01 | 0
> > > defrag.ipv6.reassembled | RxPFRbond01 | 0
> > > defrag.ipv6.timeouts | RxPFRbond01 | 0
> > > defrag.max_frag_hits | RxPFRbond01 | 0
> > > tcp.sessions | RxPFRbond01 | 169101
> > > tcp.ssn_memcap_drop | RxPFRbond01 | 0
> > > tcp.pseudo | RxPFRbond01 | 77497
> > > tcp.pseudo_failed | RxPFRbond01 | 0
> > > tcp.invalid_checksum | RxPFRbond01 | 0
> > > tcp.no_flow | RxPFRbond01 | 0
> > > tcp.syn | RxPFRbond01 | 180407
> > > tcp.synack | RxPFRbond01 | 146913
> > > tcp.rst | RxPFRbond01 | 138896
> > > tcp.segment_memcap_drop | RxPFRbond01 | 0
> > > tcp.stream_depth_reached | RxPFRbond01 | 107
> > > tcp.reassembly_gap | RxPFRbond01 | 6765
> > > detect.alert | RxPFRbond01 | 3426
> > > capture.kernel_packets | RxPFRbond02 | 33927252
> > > capture.kernel_drops | RxPFRbond02 | 1246692
> > > decoder.pkts | RxPFRbond02 | 33932611
> > > decoder.bytes | RxPFRbond02 | 25571688366
> > > decoder.invalid | RxPFRbond02 | 0
> > > decoder.ipv4 | RxPFRbond02 | 34483004
> > > decoder.ipv6 | RxPFRbond02 | 506
> > > decoder.ethernet | RxPFRbond02 | 33932611
> > > decoder.raw | RxPFRbond02 | 0
> > > decoder.null | RxPFRbond02 | 0
> > > decoder.sll | RxPFRbond02 | 0
> > > decoder.tcp | RxPFRbond02 | 24665968
> > > decoder.udp | RxPFRbond02 | 8600129
> > > decoder.sctp | RxPFRbond02 | 0
> > > decoder.icmpv4 | RxPFRbond02 | 113797
> > > decoder.icmpv6 | RxPFRbond02 | 0
> > > decoder.ppp | RxPFRbond02 | 0
> > > decoder.pppoe | RxPFRbond02 | 0
> > > decoder.gre | RxPFRbond02 | 0
> > > decoder.vlan | RxPFRbond02 | 0
> > > decoder.vlan_qinq | RxPFRbond02 | 0
> > > decoder.teredo | RxPFRbond02 | 506
> > > decoder.ipv4_in_ipv6 | RxPFRbond02 | 0
> > > decoder.ipv6_in_ipv6 | RxPFRbond02 | 0
> > > decoder.mpls | RxPFRbond02 | 0
> > > decoder.avg_pkt_size | RxPFRbond02 | 753
> > > decoder.max_pkt_size | RxPFRbond02 | 1514
> > > decoder.erspan | RxPFRbond02 | 0
> > > flow.memcap | RxPFRbond02 | 0
> > > defrag.ipv4.fragments | RxPFRbond02 | 1103110
> > > defrag.ipv4.reassembled | RxPFRbond02 | 550393
> > > defrag.ipv4.timeouts | RxPFRbond02 | 0
> > > defrag.ipv6.fragments | RxPFRbond02 | 0
> > > defrag.ipv6.reassembled | RxPFRbond02 | 0
> > > defrag.ipv6.timeouts | RxPFRbond02 | 0
> > > defrag.max_frag_hits | RxPFRbond02 | 0
> > > tcp.sessions | RxPFRbond02 | 172432
> > > tcp.ssn_memcap_drop | RxPFRbond02 | 0
> > > tcp.pseudo | RxPFRbond02 | 79224
> > > tcp.pseudo_failed | RxPFRbond02 | 0
> > > tcp.invalid_checksum | RxPFRbond02 | 0
> > > tcp.no_flow | RxPFRbond02 | 0
> > > tcp.syn | RxPFRbond02 | 183912
> > > tcp.synack | RxPFRbond02 | 150219
> > > tcp.rst | RxPFRbond02 | 143693
> > > tcp.segment_memcap_drop | RxPFRbond02 | 0
> > > tcp.stream_depth_reached | RxPFRbond02 | 105
> > > tcp.reassembly_gap | RxPFRbond02 | 4710
> > > detect.alert | RxPFRbond02 | 3469
> > > capture.kernel_packets | RxPFRbond03 | 38750498
> > > capture.kernel_drops | RxPFRbond03 | 1511800
> > > decoder.pkts | RxPFRbond03 | 38762341
> > > decoder.bytes | RxPFRbond03 | 32714534213
> > > decoder.invalid | RxPFRbond03 | 0
> > > decoder.ipv4 | RxPFRbond03 | 39299710
> > > decoder.ipv6 | RxPFRbond03 | 512
> > > decoder.ethernet | RxPFRbond03 | 38762341
> > > decoder.raw | RxPFRbond03 | 0
> > > decoder.null | RxPFRbond03 | 0
> > > decoder.sll | RxPFRbond03 | 0
> > > decoder.tcp | RxPFRbond03 | 21943466
> > > decoder.udp | RxPFRbond03 | 15992492
> > > decoder.sctp | RxPFRbond03 | 0
> > > decoder.icmpv4 | RxPFRbond03 | 178089
> > > decoder.icmpv6 | RxPFRbond03 | 0
> > > decoder.ppp | RxPFRbond03 | 0
> > > decoder.pppoe | RxPFRbond03 | 0
> > > decoder.gre | RxPFRbond03 | 0
> > > decoder.vlan | RxPFRbond03 | 0
> > > decoder.vlan_qinq | RxPFRbond03 | 0
> > > decoder.teredo | RxPFRbond03 | 512
> > > decoder.ipv4_in_ipv6 | RxPFRbond03 | 0
> > > decoder.ipv6_in_ipv6 | RxPFRbond03 | 0
> > > decoder.mpls | RxPFRbond03 | 0
> > > decoder.avg_pkt_size | RxPFRbond03 | 843
> > > decoder.max_pkt_size | RxPFRbond03 | 1514
> > > decoder.erspan | RxPFRbond03 | 0
> > > flow.memcap | RxPFRbond03 | 0
> > > defrag.ipv4.fragments | RxPFRbond03 | 1078454
> > > defrag.ipv4.reassembled | RxPFRbond03 | 537369
> > > defrag.ipv4.timeouts | RxPFRbond03 | 0
> > > defrag.ipv6.fragments | RxPFRbond03 | 0
> > > defrag.ipv6.reassembled | RxPFRbond03 | 0
> > > defrag.ipv6.timeouts | RxPFRbond03 | 0
> > > defrag.max_frag_hits | RxPFRbond03 | 0
> > > tcp.sessions | RxPFRbond03 | 169832
> > > tcp.ssn_memcap_drop | RxPFRbond03 | 0
> > > tcp.pseudo | RxPFRbond03 | 78504
> > > tcp.pseudo_failed | RxPFRbond03 | 0
> > > tcp.invalid_checksum | RxPFRbond03 | 0
> > > tcp.no_flow | RxPFRbond03 | 0
> > > tcp.syn | RxPFRbond03 | 181453
> > > tcp.synack | RxPFRbond03 | 147649
> > > tcp.rst | RxPFRbond03 | 139792
> > > tcp.segment_memcap_drop | RxPFRbond03 | 0
> > > tcp.stream_depth_reached | RxPFRbond03 | 94
> > > tcp.reassembly_gap | RxPFRbond03 | 2567
> > > detect.alert | RxPFRbond03 | 3416
> > > capture.kernel_packets | RxPFRbond04 | 63727760
> > > capture.kernel_drops | RxPFRbond04 | 3046651
> > > decoder.pkts | RxPFRbond04 | 63747722
> > > decoder.bytes | RxPFRbond04 | 55373084583
> > > decoder.invalid | RxPFRbond04 | 0
> > > decoder.ipv4 | RxPFRbond04 | 64056225
> > > decoder.ipv6 | RxPFRbond04 | 487
> > > decoder.ethernet | RxPFRbond04 | 63747722
> > > decoder.raw | RxPFRbond04 | 0
> > > decoder.null | RxPFRbond04 | 0
> > > decoder.sll | RxPFRbond04 | 0
> > > decoder.tcp | RxPFRbond04 | 55855784
> > > decoder.udp | RxPFRbond04 | 7447497
> > > decoder.sctp | RxPFRbond04 | 0
> > > decoder.icmpv4 | RxPFRbond04 | 133539
> > > decoder.icmpv6 | RxPFRbond04 | 0
> > > decoder.ppp | RxPFRbond04 | 0
> > > decoder.pppoe | RxPFRbond04 | 0
> > > decoder.gre | RxPFRbond04 | 0
> > > decoder.vlan | RxPFRbond04 | 0
> > > decoder.vlan_qinq | RxPFRbond04 | 0
> > > decoder.teredo | RxPFRbond04 | 487
> > > decoder.ipv4_in_ipv6 | RxPFRbond04 | 0
> > > decoder.ipv6_in_ipv6 | RxPFRbond04 | 0
> > > decoder.mpls | RxPFRbond04 | 0
> > > decoder.avg_pkt_size | RxPFRbond04 | 868
> > > decoder.max_pkt_size | RxPFRbond04 | 1514
> > > decoder.erspan | RxPFRbond04 | 0
> > > flow.memcap | RxPFRbond04 | 0
> > > defrag.ipv4.fragments | RxPFRbond04 | 619405
> > > defrag.ipv4.reassembled | RxPFRbond04 | 308503
> > > defrag.ipv4.timeouts | RxPFRbond04 | 0
> > > defrag.ipv6.fragments | RxPFRbond04 | 0
> > > defrag.ipv6.reassembled | RxPFRbond04 | 0
> > > defrag.ipv6.timeouts | RxPFRbond04 | 0
> > > defrag.max_frag_hits | RxPFRbond04 | 0
> > > tcp.sessions | RxPFRbond04 | 171368
> > > tcp.ssn_memcap_drop | RxPFRbond04 | 0
> > > tcp.pseudo | RxPFRbond04 | 78609
> > > tcp.pseudo_failed | RxPFRbond04 | 0
> > > tcp.invalid_checksum | RxPFRbond04 | 0
> > > tcp.no_flow | RxPFRbond04 | 0
> > > tcp.syn | RxPFRbond04 | 182409
> > > tcp.synack | RxPFRbond04 | 149124
> > > tcp.rst | RxPFRbond04 | 143473
> > > tcp.segment_memcap_drop | RxPFRbond04 | 0
> > > tcp.stream_depth_reached | RxPFRbond04 | 82
> > > tcp.reassembly_gap | RxPFRbond04 | 35459
> > > detect.alert | RxPFRbond04 | 3770
> > > flow_mgr.closed_pruned | FlowManagerThread | 310602
> > > flow_mgr.new_pruned | FlowManagerThread | 549722
> > > flow_mgr.est_pruned | FlowManagerThread | 380334
> > > flow.spare | FlowManagerThread         | 799999
> > > flow.emerg_mode_entered | FlowManagerThread | 0
> > > flow.emerg_mode_over | FlowManagerThread | 0
> > > flow.tcp_reuse | FlowManagerThread | 237
> > > flow_mgr.closed_pruned | FlowManagerThread | 308878
> > > flow_mgr.new_pruned | FlowManagerThread | 544586
> > > flow_mgr.est_pruned | FlowManagerThread | 379393
> > > flow.spare | FlowManagerThread         | 799402
> > > flow.emerg_mode_entered | FlowManagerThread | 0
> > > flow.emerg_mode_over | FlowManagerThread | 0
> > > flow.tcp_reuse | FlowManagerThread | 252
> > > tcp.memuse | Global | 439248976
> > > tcp.reassembly_memuse | Global                    | 1717630000
> > > dns.memuse | Global | 476478
> > > dns.memcap_state | Global | 0
> > > dns.memcap_global | Global | 0
> > > http.memuse | Global | 536216
> > > http.memcap | Global | 0
> > > flow.memuse | Global | 237040288
> > >
> > >
> > > _______________________________________________
> > > Suricata IDS Users mailing list: oisf-users at openinfosecfoundation.org
> > > Site: http://suricata-ids.org | Support: http://suricata-ids.org/support/
> > > List: https://lists.openinfosecfoundation.org/mailman/listinfo/oisf-users
> > > Suricata User Conference November 9-11 in Washington, DC:
> > > http://oisfevents.net
> > 
> > 
> > 
> > -- 
> > Regards,
> > Peter Manev
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