[Oisf-users] High CPU usage without any rules

Andreas Herz andi at geekosphere.org
Thu Nov 19 10:23:53 UTC 2015

On 18/11/15 at 23:24, Satish Patel wrote:
> I am new user and just playing with IDS. I have install suricata-2.0.9
> without any PF_RING or any other special flags etc.

You did compile it by yourself?
Can you post "suricata --build-info"?

> I am running it on DL360  G8 with 4GB memory. following command i am using
> to run on command line.
> ./suricata -c suricata.yaml -i eth1

Please add -vv and post the output, so we can see if any relevant infos
are logged.

> on top command it is showing 200% CPU usage without any single rules (if i
> load all rules it touch 350% CPU). my traffic rate would be 150mbps
> around.  ( I am using standard suricata.yaml config file without any
> modification )

You could use strace to see what happens.
Does this happen without traffic, too?

Andreas Herz

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