[c-nsp] NPE-G1 high CPU utilization due to 'BGP Router'

[Hauke Krull]

Hi,

I've got several C7200VXR with NPE-G1 and IOS 12.4(17) running BGP. On nearly 
all of these the CPU due to the process 'BGP Router' is below 4% - even at an 
IX with about 230 peering sessions.
But on one Router it is abnormaly high since some weeks:

CPU utilization for five seconds: 34%/8%; one minute: 30%; five minutes: 31%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 183  1023798200 148554063       6891 24.96% 17.16% 18.50%   0 BGP Router
  41    78650604   9684235       8121  0.90%  0.92%  0.92%   0 Per-Second Jobs
185    19365496 117660678        164  0.40%  0.46%  0.47%   0 BGP I/O
  61    12146332 146022603         83  0.24%  0.21%  0.22%   0 IP Input

This router has only 33 peering sessions, nothing relevant in the logs, 1GB
RAM.
Only difference I'm seeing: On this router I'm useing an outbound as-path
filter-list together with a prefix-list instead of just a prefix-list to an
upstream.

Now I'm searching for the cause of this high cpu utilization and am hoping for
some advice where to look next to narrow down th problem.

Regards
 Hauke Krull
-- 
Dipl.-Phys. Hauke Krull

NetUSE AG
Dr.-Hell-Straße 6
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Tel: +49 431 2390 400
Fax: +49 431 2390 499
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