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Troubleshooting High CPU on 1841

jwbensley
Level 1
Level 1

Hi All,

I am trying to troubleshoot high CPU usage on an 1841. It has a five minute average (as you can see below) of 37% CPU usage, not no process has a CPU usage that high, so how can this be? An invisible process is tying up the CPU? This router typically has a sustained CPU of 4-5%, now its circa 40%.

Any ideas people can give to diagnose this would be greatly appreciated

1841#show processes cpu sorted

CPU utilization for five seconds: 47%/44%; one minute: 42%; five minutes: 37%

PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process

  63     2455548    828599       2963  1.30%  1.43%  1.34%   0 IP Input        

196      946308  19241151         49  0.81%  0.90%  0.94%   0 IP SLA Mon Event

203      364616   2545972        143  0.24%  0.20%  0.21%   0 PPP manager     

204      254988   2546391        100  0.16%  0.14%  0.15%   0 PPP Events      

  54       99092     66335       1493  0.16%  0.09%  0.08%   0 DSL State Machin

110       11132     83074        134  0.08%  0.00%  0.00%   0 RUDPV1 Main Proc

   2       29676     16674       1779  0.08%  0.02%  0.00%   0 Load Meter      

126       94244    815990        115  0.08%  0.04%  0.06%   0 RBSCP Background

  52       94880     65786       1442  0.08%  0.09%  0.08%   0 DSL State Machin

  47        5104     16844        303  0.08%  0.00%  0.00%   0 ATM Periodic    

198       36060    172104        209  0.08%  0.03%  0.01%   0 IP NAT Ager     

215         636        85       7482  0.08%  0.14%  0.06% 195 SSH Process     

  73       36544    325090        112  0.08%  0.01%  0.00%   0 SSS Feature Time

  13           0         1          0  0.00%  0.00%  0.00%   0 AAA_SERVER_DEADT

  12           0         5          0  0.00%  0.00%  0.00%   0 AAA high-capacit

  14           0         1          0  0.00%  0.00%  0.00%   0 Policy Manager  

  11           4         2       2000  0.00%  0.00%  0.00%   0 ATM Idle Timer  

  18        6560     24952        262  0.00%  0.00%  0.00%   0 HC Counter Timer

  15        2136      5055        422  0.00%  0.00%  0.00%   0 DDR Timers      

  16           4         2       2000  0.00%  0.00%  0.00%   0 Entity MIB API  

  21           0         2          0  0.00%  0.00%  0.00%   0 SMART           

  17         124       479        258  0.00%  0.00%  0.00%   0 EEM ED Syslog   

  23           0         2          0  0.00%  0.00%  0.00%   0 Dialer event    

  19           0         2          0  0.00%  0.00%  0.00%   0 Serial Backgroun

  25           0         2          0  0.00%  0.00%  0.00%   0 XML Proxy Client

  26         564        77       7324  0.00%  0.05%  0.03% 194 SSH Process     

  27           0         1          0  0.00%  0.00%  0.00%   0 Inode Table Dest

  10       96164    133931        718  0.00%  0.04%  0.05%   0 ARP Input

1841#show processes memory sorted

Processor Pool Total:  187088432 Used:   25946504 Free:  161141928

      I/O Pool Total:   28311552 Used:    4829408 Free:   23482144

PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process

   0   0   41699136   11015608   24831508          0          0 *Init*         

  39   0     654496       1272     635224          0          0 USB Startup    

   0   0          0          0     396868          0          0 *MallocLite*   

  26 194     668188     305088     355188          0          0 SSH Process    

   0   0   82213740   85010240     327468     384284       4680 *Dead*         

206   0    5649108  226327924     304828     240700          0 DNS Server     

  17   0     256856          0     266828     113400          0 EEM ED Syslog  

   5   0    1124620    1508800     261576     660112     841924 Pool Manager   

   1   0     541068     319832     228208          0          0 Chunk Manager  

208   0  228498968    6552940     193324      12924      37700 DNS Server Input

201   0     175812        196     182652          0          0 PPPoE Background

204   0     474392     402664     135540          0          0 PPP Events     

145   0     116528        496     125004          0          0 Crypto WUI     

  29   0     134284        184     100436          0          0 Net Background 

152   0     666584     611404      80544          0          0 Crypto ACL     

  84   0      66676          0      76648          0          0 IP RIB Update  

  87   0      73552          0      73552          0          0 CEF process    

   3   0     629332      43544      59636          0          0 Dynamic DNS Upda

215 195    1564748    1515020      44248          0          0 SSH Process    

221 196     813376     720008      43636          0          0 SSH Process    

195   0      40556        196      39380          0          0 DHCPD Receive  

159   0      24912          0      37884          0          0 Crypto Delete Ma

193   0      14216      27956      29036          0          0 VTEMPLATE Backgr

202   0     158520      12996      25996          0          0 PPPoE Discovery

147   0        284          0      25256          0          0 RPMS_PROC_MAIN 

192   0        196          0      25168          0          0 tHUB

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