Re: high cpu load with tcpdump

[christos%astron.com@localhost (Christos Zoulas)]

In article <Pine.NEB.4.64.1602261452000.28151%6bone.informatik.uni-leipzig.de@localhost>,
 <6bone%6bone.informatik.uni-leipzig.de@localhost> wrote:
>Hello,
>
>On my router tcpdump uses always 100% CPU.
>
>   PID USERNAME PRI NICE   SIZE   RES STATE      TIME   WCPU    CPU COMMAND
>  3403 _tcpdump  38    0    19M 3016K RUN/6      0:24 98.08% 70.02% tcpdump
>     0 root       0    0     0K 1182M CPU/7     49:35  0.00%  3.76% [system]
>
>The problem also occurs when tcpdump is listening on an interface 
>with no network traffic. Therefore, it can not be a load problem.
>
>The problem does not occur on all interfaces.
>
>ixg(0|1), bnx(0|1) and tap(0|1) are affected.
>
>lo0, stf0 and vlan* are not affected.
>
>
>System is: NetBSD 7.0_STABLE
>
>Any idea what could be the problem?
>
>
>Thank you for your efforts.

ktrace please?

christos