[c-nsp] High CPU usage on 3640

[Robert Johnson]

Here is what Michael and I have determined:
In the past hour, only about 0.3% of IP traffic has been process switched.
Where should I look next?

Here is a sho int switching and sho cef not-cef-switched from this morning:

router>sho cef not
CEF Packets passed on to next switching layer
Slot  No_adj No_encap Unsupp'ted Redirect  Receive  Options   Access
Frag
RP    519742       0           0      135  9230575        0        0
 0

router>sho int switching
FastEthernet0/0 Trunk to cat2924-pri
          Throttle count          0
                   Drops         RP      66318         SP          0
             SPD Flushes       Fast          0        SSE          0
             SPD Aggress       Fast          0
            SPD Priority     Inputs  434347726      Drops         14

    Protocol  IP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process  444100384 4128900191  451024072 1623654938
            Cache misses    3165282          -          -          -
                    Fast  817529650  465527639  814305889 3034876515
               Auton/SSE          0          0          0          0

    Protocol  DEC MOP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process          0          0      88719    6831363
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    Protocol  ARP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process     591696   35549720     880345   56342080
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    Protocol  CDP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process     889072  350294368     889559  310455284
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    Protocol  Other
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process          3       1182    5337235  320234100
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    NOTE: all counts are cumulative and reset only after a reload.


And from a little later:

router>sho cef not-cef-switched
CEF Packets passed on to next switching layer
Slot  No_adj No_encap Unsupp'ted Redirect  Receive  Options   Access
Frag
RP    519815       0           0      135  9231624        0        0
 0

router>sho int switching
FastEthernet0/0 Trunk to cat2924-pri
          Throttle count          0
                   Drops         RP      66318         SP          0
             SPD Flushes       Fast          0        SSE          0
             SPD Aggress       Fast          0
            SPD Priority     Inputs  434360075      Drops         14

    Protocol  IP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process  444113247 4130580154  451036862 1625391199
            Cache misses    3165442          -          -          -
                    Fast  821810302 2800528162  818586397 1070317319
               Auton/SSE          0          0          0          0

    Protocol  DEC MOP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process          0          0      88724    6831748
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    Protocol  ARP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process     591727   35551580     880393   56345152
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    Protocol  CDP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process     889122  350314068     889609  310472734
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    Protocol  Other
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process          3       1182    5337537  320252220
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    NOTE: all counts are cumulative and reset only after a reload.

Also:

CPU utilization for five seconds: 64%/61%; one minute: 54%; five minutes:
50%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 57   213461156 440960100        484  0.16%  0.18%  0.17%   0 IP Input


On Wed, Jul 29, 2009 at 10:57 AM, Mikael Abrahamsson <swmike at swm.pp.se>wrote:

> On Wed, 29 Jul 2009, Robert Johnson wrote:
>
>  Suggestions?
>>
>
> Please provide output from "show int switching" (not tab-completable) to
> verify that all traffic is cef switched.
>
> --
> Mikael Abrahamsson    email: swmike at swm.pp.se
>