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High CPU in WS-C3750X-48

Currently, my Cisco 3750x (2 switches stacking) is having very hight CPU. Below are some of the output :

3750-ANA#sh processes cpu sorted | ex 0.00

CPU utilization for five seconds: 55%/30%; one minute: 55%; five minutes: 55%

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

156   279337896  40092867       6967 12.15% 11.93% 11.78%   0 Hulc LED Process

  74    56876760   9703900       5861  1.91%  2.07%  2.11%   0 RedEarth Tx Mana

230    74520206   1971456      37799  1.75%  1.67%  1.65%   0 PI MATM Aging Pr

116    41350338   4122688      10029  1.27%  1.74%  1.75%   0 hpm counter proc

341         204       154       1324  0.95%  0.19%  0.04%   2 Virtual Exec    

217   123972805  87319023       1419  0.63%  0.77%  0.71%   0 Spanning Tree   

  73     9434496  14768667        638  0.47%  0.67%  0.66%   0 RedEarth I2C dri

167     8388382    419994      19972  0.31%  0.37%  0.39%   0 HQM Stack Proces

168     3327583   1675745       1985  0.31%  0.18%  0.20%   0 HRPC qos request

  83     7428418  17580596        422  0.31%  0.07%  0.05%   0 hrpc <- response

  34     1073084   2649238        405  0.31%  0.05%  0.04%   0 Net Background  

117     1108809   4101450        270  0.15%  0.04%  0.03%   0 HRPC pm-counters

  38     8759587   1973863       4437  0.15%  0.28%  0.30%   0 Per-Second Jobs 

3750-ANA#

3750-ANA#sh processes cpu history

    6666666655555555555555555555555555555555555555555555555555

    0003333333333333333333555554444444444444443333322222999922

100                                                          

90                                                          

80                                                          

70                                                          

60 ********              *****                         **** 

50 **********************************************************

40 **********************************************************

30 **********************************************************

20 **********************************************************

10 **********************************************************

   0....5....1....1....2....2....3....3....4....4....5....5....

             0    5    0    5    0    5    0    5    0    5   

               CPU% per second (last 60 seconds)

                  1      1                  1  1             

    6666666666766606666660877766799986688686077066696666689966

    4553766176008604786430036679519973648503002045395773835555

100               *      *        **        *  *   *      ** 

90               *      *       ****   *   *  *   *      ** 

80               *      ** **  *****  ** * *  *   *     *** 

70  ** *** *** *** ***  **********#* ***** #*** * **** ******

60 *****##**###*##**#**#################*#*#*##*#*#*****###**

50 ##########################################################

40 ##########################################################

30 ##########################################################

20 ##########################################################

10 ##########################################################

   0....5....1....1....2....2....3....3....4....4....5....5....

             0    5    0    5    0    5    0    5    0    5   

               CPU% per minute (last 60 minutes)

              * = maximum CPU%   # = average CPU%

    1            11 111111111 1111111111111111 11 1 111  11  111111 11 1 

    0999999999999009000000000900000000000000009009090009900990000009009099

    0555555456545008000000000900000000000000005009090009900990000009009089

100 ******* *** ******#***************************#***********************

90 *#*##########*****#######################*#######################*****

80 *#############*#*########################*#######################*****

70 *#############*##################################################*****

60 ###################################################################***

50 ####################################################################*#

40 ######################################################################

30 ######################################################################

20 ######################################################################

10 ######################################################################

   0....5....1....1....2....2....3....3....4....4....5....5....6....6....7.

             0    5    0    5    0    5    0    5    0    5    0    5    0

                   CPU% per hour (last 72 hours)

                  * = maximum CPU%   # = average CPU%

3750-ANA#

3750-ANA#sh ver

Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(55)SE3, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2011 by Cisco Systems, Inc.

Compiled Thu 05-May-11 15:40 by prod_rel_team

Image text-base: 0x00003000, data-base: 0x02800000

ROM: Bootstrap program is C3750E boot loader

BOOTLDR: C3750E Boot Loader (C3750X-HBOOT-M) Version 12.2(53r)SE2, RELEASE SOFTWARE (fc1)

3750-ANA uptime is 3 weeks, 3 days, 12 hours, 19 minutes

System returned to ROM by power-on

System restarted at 23:58:00 GMT+7 Sat Oct 15 2011

System image file is "flash:/c3750e-universalk9-mz.122-55.SE3/c3750e-universalk9-mz.122-55.SE3.bin"

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

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:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

License Level: ipbase

License Type: Permanent

Next reload license Level: ipbase

cisco WS-C3750X-48 (PowerPC405) processor (revision A0) with 262144K bytes of memory.

Processor board ID FDO1529K0PC

Last reset from power-on

2 Virtual Ethernet interfaces

1 FastEthernet interface

104 Gigabit Ethernet interfaces

4 Ten Gigabit Ethernet interfaces

The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address       : 44:D3:CA:D9:7E:80

Motherboard assembly number     : 73-12552-05

Motherboard serial number       : FDO153003TU

Model revision number           : A0

Motherboard revision number     : B0

Model number                    : WS-C3750X-48T-S

Daughterboard assembly number   : 800-32727-01

Daughterboard serial number     : FDO15291XP3

System serial number            : FDO1529K0PC

Top Assembly Part Number        : 800-31326-02

Top Assembly Revision Number    : C0

Version ID                      : V02

CLEI Code Number                : COMJT00ARB

Hardware Board Revision Number  : 0x03

Switch Ports Model              SW Version            SW Image                

------ ----- -----              ----------            ----------              

*    1 54    WS-C3750X-48       12.2(55)SE3           C3750E-UNIVERSALK9-M    

     2 54    WS-C3750X-48       12.2(55)SE3           C3750E-UNIVERSALK9-M    

Switch 02

---------

Switch Uptime                   : 3 weeks, 3 days, 11 hours, 44 minutes

Base ethernet MAC Address       : 44:D3:CA:DE:8F:00

Motherboard assembly number     : 73-12552-05

Motherboard serial number       : FDO153003TZ

Model revision number           : A0

Motherboard revision number     : B0

Model number                    : WS-C3750X-48T-S

Daughterboard assembly number   : 800-32727-01

Daughterboard serial number     : FDO15291XMS

System serial number            : FDO1529P0UP

Top assembly part number        : 800-31326-02

Top assembly revision number    : C0

Version ID                      : V02

CLEI Code Number                : COMJT00ARB

License Level                   : ipbase

License Type                    : Permanent

Next reboot licensing Level     : ipbase

Configuration register is 0xF

3750-ANA#

3750-ANA#sh ip route summary

IP routing table name is Default-IP-Routing-Table(0)

IP routing table maximum-paths is 32

Route Source    Networks    Subnets     Overhead    Memory (bytes)

connected       0           1           64          152

static          1           0           64          152

internal        1                                   1172

Total           2           1           128         1476

3750-ANA#

3750-ANA#sh spanning-tree summary

Switch is in mst mode (IEEE Standard)

Root bridge for: none

EtherChannel misconfig guard is enabled

Extended system ID           is enabled

Portfast Default             is disabled

PortFast BPDU Guard Default  is disabled

Portfast BPDU Filter Default is disabled

Loopguard Default            is disabled

UplinkFast                   is disabled

Stack port is StackPort1

BackboneFast                 is disabled

Configured Pathcost method used is short (Operational value is long)

Name                   Blocking Listening Learning Forwarding STP Active

---------------------- -------- --------- -------- ---------- ----------

MST0                         0         0        0         59         59

MST1                         0         0        0         59         59

---------------------- -------- --------- -------- ---------- ----------

2 msts                       0         0        0        118        118

3750-ANA#

I am not sure what is using CPU to go up like this. I had tried some troubleshooting guide on Cisco web site like "Troubleshooting high CPU Utilization" but it does not help me to find out the problem yet. Does anyone have any idea how to troubleshoot ?

3 REPLIES
New Member

High CPU in WS-C3750X-48

Hi Ty,

        Based on your 'sh processes cpu' output, the notable one is HULC LED Process. Seems like this is normal based on this bug id CSCtn42790. The bug details mentioned what the specific process does. Seems like this is expected and should be normal. Thanks

New Member

High CPU in WS-C3750X-48

Do you think upgrade IOS will help?

Hall of Fame Super Gold

High CPU in WS-C3750X-48

Try 12.2(55)SE4.

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