[c-nsp] 3640 CPU load question

[Jared Mauch]

Burton spake:
> However, the router sits at 25% CPU usage (CPU utilization for five
> seconds: 30%/30%; one minute:  25%; five minutes: 25%) all the time. Does
> this CPU usage seem high?

	Not really.

	The system doesn't report the cpu time spent in "interrupt mode",
which is what happens when it is forwarding a packet..

	turning off your header-compression and service-policy should cause
you to see decreased cpu utilization..  other than that, this is
"normal" when you're moving a large amount of data..

> A 'show proc cpu' doesn't show anything interesting:

	fyi, you can also use this in most recent sw:
"sh proc cpu sorted"

> 5-3640-WAN#show proc cpu | exclude 0.00
> CPU utilization for five seconds: 30%/27%; one minute: 28%; five minutes: 27%
>  PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
>    3        7768      1233       6300  2.03%  0.61%  0.44% 130 Virtual Exec
>   21     1735868   4072677        426  0.08%  0.06%  0.03%   0 Per-Second Jobs
>   31     5343616  13613338        392  0.08%  0.13%  0.14%   0 IP Input
>   70     2664044  19148167        139  0.08%  0.09%  0.06%   0 IP-EIGRP Hello
> 
> Here is a snippet of the config for the interfaces:
> 
> interface FastEthernet0/0
>  ip address 192.168.1.4 255.255.255.0
>  ip route-cache flow
>  speed 100
>  full-duplex
> !
> interface Serial1/0
>  bandwidth 1536
>  ip address 10.255.110.1 255.255.255.252
>  service-policy output WAN
>  ip tcp header-compression iphc-format
>  serial restart-delay 0
>  ip rtp header-compression iphc-format
> !
> 
> 
> 
> A gentle proding with a Clue-By-Four would be appreciated.
> 
> -- 
> Burton Windle                           bwindle at fint.org
> 
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/

-- 
Jared Mauch  | pgp key available via finger from jared at puck.nether.net
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.