[nsp] high cpu load on 2651

[Jim Littlefield]

Kinczli Zoltán wrote:

>Hello,
>
> Thanks for everyone who responded.
>I'm including the sanitized config and a 'sh proc cpu hist'
>
> Yes, almost all traffic is at interrupt level, the procesess are sleeping.
>No BGP on the router, just eigrp. The age of the routes when i last checked was over 2 days.
>Yes, CEF is ON. Yes, flow-cache and flow-cache feature accelerate is on.
>
> The load is unusually high w/o ACL, w/o CAR.
>
>
> a TAC CE has analyzed the CPU profile output, the most cpu intensive functions were:
>
>36.31%  process_throttle_off 
>     (throttle is something like a self pretoction action..., this seems to be high... but i'm not a cpu profiling expert)
>11.38%  scheduler
>
>
> Perhaps, i should remove the IP addresses  ;))
>  
>

We are having the same problem with a pair of 2651's. Running iperf 
tests, we have found that the routers cannot handle any where close to 
the 40kps rate that Cisco advertises without running out of CPU.

-- 
Jim Littlefield            "I have a red sign on my door. It says, 
                            'If this sign is blue, you're moving
                            too fast.'" - Steven Wright