[Oisf-users] Suricata using 35% cpu with no load?

Duane Howard duane.security at gmail.com
Wed Aug 12 18:22:15 UTC 2015


4x3.2Ghz Xeon cores

On Wed, Aug 12, 2015 at 8:32 AM, Peter Manev <petermanev at gmail.com> wrote:

> On Tue, Aug 11, 2015 at 8:39 PM, Duane Howard <duane.security at gmail.com>
> wrote:
> > Drops to ~7-10% with that change. Sorry for the delayed response.
>
>
> I would suggest (for your test set up) - start with the defaults, then
> increase as needed (watch out for flow.emerg_mode_entered counters in
> the stats.log).
> How many CPUs do you have on the test VM ? (and what speed/type?)
>
> Thanks
>
> >
> > On Sat, Aug 1, 2015 at 10:24 AM, Peter Manev <petermanev at gmail.com>
> wrote:
> >>
> >> On Fri, Jul 31, 2015 at 7:39 PM, Duane Howard <duane.security at gmail.com
> >
> >> wrote:
> >> > Just build 2.1beta4 and it's the same thing.
> >> >
> >> > On Fri, Jul 31, 2015 at 10:22 AM, Duane Howard
> >> > <duane.security at gmail.com>
> >> > wrote:
> >> >>
> >> >> yaml sent off list.
> >>
> >> From the privately shared yaml -
> >> flow:
> >>   memcap: 1.5gb
> >>   hash-size: 15728640
> >>
> >> divide flow.memcap  by 3 and flow.hash-size by 10 - reload and please
> >> let us know if any difference.
> >>
> >> Thanks
> >>
> >> >>This is the only machine I've tried on right now, and
> >> >> I can't use the other one that is similarly configured because it's
> >> >> being
> >> >> used for other stuff at the moment. I did pretty extensive
> >> >> experimentation
> >> >> with 2.0.6 a while back on hardware and didn't see this issue. I'll
> try
> >> >> installing 2.1 and playing with it later today to see if I can
> >> >> reproduce
> >> >> that way.
> >> >>
> >> >> On Fri, Jul 31, 2015 at 6:47 AM, Peter Manev <petermanev at gmail.com>
> >> >> wrote:
> >> >>>
> >> >>> On Thu, Jul 30, 2015 at 11:27 PM, Duane Howard
> >> >>> <duane.security at gmail.com>
> >> >>> wrote:
> >> >>> > strace only shows the process doing constant:
> >> >>> > nanosleep({0, 10000000}, NULL)          = 0
> >> >>> > nanosleep({0, 10000000}, NULL)          = 0
> >> >>> > nanosleep({0, 10000000}, NULL)          = 0
> >> >>> > nanosleep({0, 10000000}, NULL)          = 0
> >> >>> > nanosleep({0, 10000000}, NULL)          = 0
> >> >>> > nanosleep({0, 10000000}, NULL)          = 0
> >> >>> > ....
> >> >>> >
> >> >>>
> >> >>> Hmm strange. I have not experianced that before.
> >> >>> Does this happen on any VM or just this one in particular?
> >> >>> Can you switch to 2.1beta4 and see if any difference. Please feel
> free
> >> >>> to send me your suricata.yaml if you would like - I can see if this
> is
> >> >>> enough to reproduce the issue.
> >> >>>
> >> >>> thanks
> >> >>>
> >> >>>
> >> >>> >
> >> >>> > On Thu, Jul 30, 2015 at 2:17 PM, Duane Howard
> >> >>> > <duane.security at gmail.com>
> >> >>> > wrote:
> >> >>> >>
> >> >>> >> I can reproduce. I ran it on a single low volume real NIC with
> the
> >> >>> >> same
> >> >>> >> result. Nothing terribly interesting in suricata.log with -vv
> >> >>> >> enabled:
> >> >>> >> Here's the logs after rule and config loading:
> >> >>> >>
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - Core dump size set to unlimited.
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - Unified2-alert initialized:
> >> >>> >> filename
> >> >>> >> suricata.u2, limit 128 MB
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - Syslog output initialized
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - Unable to find af-packet config
> >> >>> >> for
> >> >>> >> interface "eth0" or "default", using default value
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - Going to use 1 thread(s)
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - Enabling zero copy mode
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - RunModeIdsAFPWorkers initialised
> >> >>> >> 30/7/2015 -- 21:14:06 - <Notice> - all 1 packet processing
> threads,
> >> >>> >> 3
> >> >>> >> management threads initialized, engine started.
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - Using interface 'eth0' via
> socket
> >> >>> >> 7
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - All AFP capture threads are
> >> >>> >> running.
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - Thread AFPacketeth01 using
> socket
> >> >>> >> 7
> >> >>> >> 30/7/2015 -- 21:14:06 - <Info> - Starting to read on
> AFPacketeth01
> >> >>> >> ^C30/7/2015 -- 21:15:27 - <Notice> - Signal Received.  Stopping
> >> >>> >> engine.
> >> >>> >> 30/7/2015 -- 21:15:27 - <Info> - 0 new flows, 0 established flows
> >> >>> >> were
> >> >>> >> timed out, 0 flows in closed state
> >> >>> >> 30/7/2015 -- 21:15:28 - <Info> - time elapsed 81.925s
> >> >>> >> 30/7/2015 -- 21:15:28 - <Info> - (AFPacketeth01) Kernel: Packets
> >> >>> >> 3372,
> >> >>> >> dropped 0
> >> >>> >> 30/7/2015 -- 21:15:28 - <Info> - (AFPacketeth01) Packets 3345,
> >> >>> >> bytes
> >> >>> >> 1318862
> >> >>> >> 30/7/2015 -- 21:15:28 - <Info> - Stream TCP processed 2723 TCP
> >> >>> >> packets
> >> >>> >> 30/7/2015 -- 21:15:28 - <Info> - (AFPacketeth01) Alerts 0
> >> >>> >> 30/7/2015 -- 21:15:28 - <Info> - Alert unified2 module wrote 0
> >> >>> >> alerts
> >> >>> >> 30/7/2015 -- 21:15:28 - <Info> - host memory usage: 390144 bytes,
> >> >>> >> maximum:
> >> >>> >> 16777216
> >> >>> >> 30/7/2015 -- 21:15:28 - <Info> - cleaning up signature grouping
> >> >>> >> structure... complete
> >> >>> >> 30/7/2015 -- 21:15:28 - <Notice> - Stats for 'eth0':  pkts: 3372,
> >> >>> >> drop: 0
> >> >>> >> (0.00%), invalid chksum: 0
> >> >>> >>
> >> >>> >>
> >> >>> >> On Thu, Jul 30, 2015 at 2:02 PM, Peter Manev <
> petermanev at gmail.com>
> >> >>> >> wrote:
> >> >>> >>>
> >> >>> >>>
> >> >>> >>> On 30 jul 2015, at 21:50, Duane Howard <
> duane.security at gmail.com>
> >> >>> >>> wrote:
> >> >>> >>>
> >> >>> >>>
> >> >>> >>> Can you reproduce this problem at will? Anything in verbose mode
> >> >>> >>> in
> >> >>> >>> Suricata.log?
> >> >>> >>>
> >> >>> >>> Can you narrow it down to a relation of a single interface
> >> >>> >>> configuration
> >> >>> >>> (as you mention in your initial mail)?
> >> >>> >>>
> >> >>> >>> Thanks
> >> >>> >>>
> >> >>> >>>
> >> >>> >>> This is Suricata version 2.0.8 RELEASE
> >> >>> >>> Features: PCAP_SET_BUFF LIBPCAP_VERSION_MAJOR=1 PF_RING
> AF_PACKET
> >> >>> >>> HAVE_PACKET_FANOUT LIBCAP_NG LIBNET1.1
> HAVE_HTP_URI_NORMALIZE_HOOK
> >> >>> >>> SIMD support: none
> >> >>> >>> Atomic intrisics: 1 2 4 8 byte(s)
> >> >>> >>> 64-bits, Little-endian architecture
> >> >>> >>> GCC version 4.6.3, C version 199901
> >> >>> >>> compiled with -fstack-protector
> >> >>> >>> compiled with _FORTIFY_SOURCE=2
> >> >>> >>> L1 cache line size (CLS)=64
> >> >>> >>> compiled with LibHTP v0.5.17, linked against LibHTP v0.5.17
> >> >>> >>> Suricata Configuration:
> >> >>> >>>   AF_PACKET support:                       yes
> >> >>> >>>   PF_RING support:                         yes
> >> >>> >>>   NFQueue support:                         no
> >> >>> >>>   NFLOG support:                           no
> >> >>> >>>   IPFW support:                            no
> >> >>> >>>   DAG enabled:                             no
> >> >>> >>>   Napatech enabled:                        no
> >> >>> >>>   Unix socket enabled:                     no
> >> >>> >>>   Detection enabled:                       yes
> >> >>> >>>
> >> >>> >>>   libnss support:                          no
> >> >>> >>>   libnspr support:                         no
> >> >>> >>>   libjansson support:                      no
> >> >>> >>>   Prelude support:                         no
> >> >>> >>>   PCRE jit:                                no
> >> >>> >>>   LUA support:                             no
> >> >>> >>>   libluajit:                               no
> >> >>> >>>   libgeoip:                                yes
> >> >>> >>>   Non-bundled htp:                         yes
> >> >>> >>>   Old barnyard2 support:                   no
> >> >>> >>>   CUDA enabled:                            no
> >> >>> >>>
> >> >>> >>>   Suricatasc install:                      yes
> >> >>> >>>
> >> >>> >>>   Unit tests enabled:                      no
> >> >>> >>>   Debug output enabled:                    no
> >> >>> >>>   Debug validation enabled:                no
> >> >>> >>>   Profiling enabled:                       no
> >> >>> >>>   Profiling locks enabled:                 no
> >> >>> >>>   Coccinelle / spatch:                     no
> >> >>> >>>
> >> >>> >>> Generic build parameters:
> >> >>> >>>   Installation prefix (--prefix):          /usr
> >> >>> >>>   Configuration directory (--sysconfdir):  /etc/suricata/
> >> >>> >>>   Log directory (--localstatedir) :        /var/log/suricata/
> >> >>> >>>
> >> >>> >>>   Host:                                    x86_64-pc-linux-gnu
> >> >>> >>>   GCC binary:                              gcc
> >> >>> >>>   GCC Protect enabled:                     no
> >> >>> >>>   GCC march native enabled:                no
> >> >>> >>>   GCC Profile enabled:                     no
> >> >>> >>>
> >> >>> >>>
> >> >>> >>> On Thu, Jul 30, 2015 at 1:41 PM, Peter Manev
> >> >>> >>> <petermanev at gmail.com>
> >> >>> >>> wrote:
> >> >>> >>>>
> >> >>> >>>>
> >> >>> >>>>
> >> >>> >>>> On 30 jul 2015, at 20:58, Duane Howard <
> duane.security at gmail.com>
> >> >>> >>>> wrote:
> >> >>> >>>>
> >> >>> >>>> When closing suri it reports 0 packets for the interface I'm
> >> >>> >>>> mainly
> >> >>> >>>> concerned with. There's also nothing in fast or other logs to
> >> >>> >>>> indicate
> >> >>> >>>> traffic.
> >> >>> >>>>
> >> >>> >>>> 30/7/2015 -- 19:58:41 - <Notice> - Stats for 'bond0':  pkts: 0,
> >> >>> >>>> drop: 0
> >> >>> >>>> (-nan%), invalid chksum: 0
> >> >>> >>>>
> >> >>> >>>>
> >> >>> >>>> What is the output of suricata --build-info ?
> >> >>> >>>>
> >> >>> >>>> If you have perf tools installed have a look at what in
> Suricata
> >> >>> >>>> uses
> >> >>> >>>> the most CPU -
> >> >>> >>>> perf top -p pidofsuri
> >> >>> >>>>
> >> >>> >>>> Thanks
> >> >>> >>>>
> >> >>> >>>>
> >> >>> >>>> On Thu, Jul 30, 2015 at 12:57 PM, Alan Wanderley dos Santos
> >> >>> >>>> <alan.santos at rnp.br> wrote:
> >> >>> >>>>>
> >> >>> >>>>> Didi you see the fast.log and others logs?
> >> >>> >>>>>
> >> >>> >>>>> Maybe there are some traffic (icmp or broadcast for example)
> >> >>> >>>>> coming
> >> >>> >>>>> to
> >> >>> >>>>> virtual machine, even little being data, can generated a lot
> of
> >> >>> >>>>> logs and
> >> >>> >>>>> degree the performance.
> >> >>> >>>>>
> >> >>> >>>>> I had a similar situation on a VM of testing.
> >> >>> >>>>>
> >> >>> >>>>> Just a shot into darkness rsrs
> >> >>> >>>>>
> >> >>> >>>>> Regards,
> >> >>> >>>>>
> >> >>> >>>>> -----------------------------------------------
> >> >>> >>>>> Alan Santos
> >> >>> >>>>> Analista de Seguran├ža
> >> >>> >>>>> Centro de Atendimento a Incidentes de Seguran├ža (CAIS)
> >> >>> >>>>> Rede Nacional de Ensino e Pesquisa (RNP)
> >> >>> >>>>> (19) 3787-3314 | alan.santos at rnp.br
> >> >>> >>>>>
> >> >>> >>>>> ________________________________
> >> >>> >>>>> De: "Duane Howard" <duane.security at gmail.com>
> >> >>> >>>>> Para: "oisf-users" <oisf-users at openinfosecfoundation.org>
> >> >>> >>>>> Enviadas: Quinta-feira, 30 de julho de 2015 16:50:51
> >> >>> >>>>> Assunto: [Oisf-users] Suricata using 35% cpu with no load?
> >> >>> >>>>>
> >> >>> >>>>> I've got a random virtual testing machine, and I'm seeing
> >> >>> >>>>> Suricata
> >> >>> >>>>> sitting at about 35% CPU load, even though there's absolutely
> no
> >> >>> >>>>> traffic
> >> >>> >>>>> heading to it at the moment. Is there an easy way to get
> >> >>> >>>>> Suricata
> >> >>> >>>>> to tell me
> >> >>> >>>>> what it's doing that would cause this? It occurs on real
> >> >>> >>>>> interfaces
> >> >>> >>>>> with low
> >> >>> >>>>> traffic, loopback, as well as bonds where there's no trafic.
> >> >>> >>>>> ./d
> >> >>> >>>>>
> >> >>> >>>>> _______________________________________________
> >> >>> >>>>> 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 4 & 5 in Barcelona:
> >> >>> >>>>> http://oisfevents.net
> >> >>> >>>>
> >> >>> >>>>
> >> >>> >>>> _______________________________________________
> >> >>> >>>> 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 4 & 5 in Barcelona:
> >> >>> >>>> http://oisfevents.net
> >> >>> >>>
> >> >>> >>>
> >> >>> >>
> >> >>> >
> >> >>>
> >> >>>
> >> >>>
> >> >>> --
> >> >>> Regards,
> >> >>> Peter Manev
> >> >>
> >> >>
> >> >
> >>
> >>
> >>
> >> --
> >> Regards,
> >> Peter Manev
> >
> >
>
>
>
> --
> Regards,
> Peter Manev
>
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