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Community Member

getting high CPU utilization please find the output?

 

NAME_WAN#sh processes cpu so 1min | e 0.00
CPU utilization for five seconds: 90%/86%; one minute: 85%; five minutes: 88%
 PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process 
 313    15695612     1138314      13788  1.11%  1.17%  1.16%   0 FNF Cache Ager P 
  96     6805092   128194683         53  0.79%  0.67%  0.56%   0 Ethernet Msec Ti 
 120    13727744     7061444       1944  0.71%  0.62%  0.50%   0 IP Input         
 319     5811684    63535438         91  0.63%  0.47%  0.39%   0 HSRP Common      
 210        7308         573      12753  0.71%  0.21%  0.21% 194 Virtual Exec     
  29     3872552     2738636       1414  0.15%  0.19%  0.16%   0 ARP Input        
 116     1612520    32080985         50  0.15%  0.15%  0.12%   0 IPAM Manager     
  64     1983988     1112729       1782  0.15%  0.14%  0.15%   0 Per-Second Jobs  
 183     1315388     1607757        818  0.15%  0.13%  0.10%   0 CEF: IPv4 proces 
 331     1603604     1726606        928  0.07%  0.11%  0.10%   0 OSPF-10 Router   
 240     1138992    33723806         33  0.07%  0.11%  0.09%   0 MMON MENG        
 314     1179816     2127661        554  0.07%  0.09%  0.09%   0 IP NAT Ager      
 324     2505576     1951696       1283  0.07%  0.08%  0.07%   0 IP SNMP          
 254     1217320     1803606        674  0.15%  0.07%  0.06%   0 Crypto PAS Proc  

 

NAME_WAN2#sh processes cpu hi 

NAME_WAN2   11:59:09 AM Wednesday Mar 12 2014 PST8PDT

                                                                  
                                                                  
                                                                  
      777777788888999999999999999999999999988888999999999988888999
      887777777777888888888888888888883333388888111116666600000111
  100             ********************               *****        
   90        *********************************************     ***
   80 ************************************************************
   70 ************************************************************
   60 ************************************************************
   50 ************************************************************
   40 ************************************************************
   30 ************************************************************
   20 ************************************************************
   10 ************************************************************
     0....5....1....1....2....2....3....3....4....4....5....5....6
               0    5    0    5    0    5    0    5    0    5    0
               CPU% per second (last 60 seconds)


Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 15.1(4)M5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Tue 04-Sep-12 15:11 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

 uptime is 1 week, 5 days, 19 hours, 29 minutes
System returned to ROM by power-on
System restarted at 15:30:36 PST8PDT Thu Feb 27 2014
System image file is "flash:c1841-adventerprisek9-mz.151-4.M5.bin"
Last reload type: Normal Reload


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Importers, exporters, distributors and users are responsible for
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agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
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If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco 1841 (revision 7.0) with 358400K/34816K bytes of memory.
Processor board ID FTX1153W03C
2 FastEthernet interfaces
1 Serial interface
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
126000K bytes of ATA CompactFlash (Read/Write)


License Info:

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Super Bronze

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Since most of your CPU utilization is interrupt CPU, your router just might have hit it's capacity limits.  What's your aggregate bps through the router at the same time?

Community Member

What do you mean by aggregate

What do you mean by aggregate bps ?

Hello Sanjaya, please post

Hello Sanjaya,

 

please post the show interface summary output

 

Harish.

Community Member

Thank you Harish, please find

Thank you Harish, please find the output

show interface summary       

 *: interface is up
 IHQ: pkts in input hold queue     IQD: pkts dropped from input queue
 OHQ: pkts in output hold queue    OQD: pkts dropped from output queue
 RXBS: rx rate (bits/sec)          RXPS: rx rate (pkts/sec)
 TXBS: tx rate (bits/sec)          TXPS: tx rate (pkts/sec)
 TRTL: throttle count

  Interface                   IHQ       IQD       OHQ       OQD      RXBS      RXPS      TXBS      TXPS      TRTL
-----------------------------------------------------------------------------------------------------------------
* FastEthernet0/0               0         0         0         0   2410000       311   1529000       677        11
* FastEthernet0/1               0         2         0         0   1217000       690   2440000       323       325
* FastEthernet0/1.1             -         -         -         -         -         -         -         -         -
* FastEthernet0/1.10            -         -         -         -         -         -         -         -         -
* FastEthernet0/1.20            -         -         -         -         -         -         -         -         -
  Serial0/0/0                   0         0         0         0         0         0         0         0         0
* Loopback0                     0         0         0         0         0         0         0         0         0
* Loopback1                     0         0         0         0         0         0         0         0         0
* Loopback5                     0         0         0         0         0         0         0         0         0
* NVI0                          0         0         0         0         0         0         0         0         0
* Tunnel500                     0         0         0   2512519         0         0    845000       470         0
* Tunnel10500                   0         0         0        90         0         0         0         0         0
NOTE:No separate counters are maintained for subinterfaces
     Hence Details of subinterface are not shown

Super Bronze

DisclaimerThe Author of this

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting


Assuming those bit rates correspond to your high CPU usage, what might be happening is packet fragmentation across your tunnel interface.

 

Have you implemented Cisco recommendation to avoid such fragmentation?  I.e.: http://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/25885-pmtud-ipfrag.html?referring_site=smartnavRD

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