[c-nsp] High CPU - 7206VXR

[Łukasz Bromirski]

Paul Stewart wrote:

> Our CPU on this box is very high hitting over 80% at peak times with only
> 100Mb/s of PPPOE traffic.  This should be in the 35-40% range so I'm trying
> to figure out why it's so high.  Below is a CPU snapshot with only 69Mbps of
> traffic:
> CPU utilization for five seconds: 55%/39%; one minute: 56%; five minutes: 56%
>  PID Runtime(ms)    Invoked      uSecs   5Sec   1Min   5Min TTY Process
>   71   458570796 1703950621          0 11.87% 11.27% 11.11%   0 IP Input

[...]

> Any input is most appreciated...

It seems in that case something is taking 11% of CPU time because
it can't be CEF-switched. Try to identify the feature using with
'sh cef drop', 'sh cef not-cef-switched', I'm not sure 12.4(17) would
be the best one for PPPoE aggregation - propably 12.2SB would do better
given it supports all the required features (we didn't see your config).

-- 
"Don't expect me to cry for all the     |               Łukasz Bromirski
  reasons you had to die" -- Kurt Cobain |    http://lukasz.bromirski.net