Hulc LED Process on cisco WS-C3750X-48 version 12.2(53)SE2

[try.chhay]

Hi,

Cisco Switch 3750 version 12.2(53)SE2 is having 13.87% Hulc LED Process. I saw a forum said that it is Cisco bug but when I check the switch version is in Fixed released version based on https://tools.cisco.com/bugsearch/bug/CSCsi78581/?referring_site=bugquickviewclick . Anyone here has experiences or any idea to fix this issue?

Thank you,

Try Chhay

[John Cui · Accepted solution]

Hi, 

With the platform of yours, you could hit the Bug CSCtn42790, which informed this is an expected behavior.

https://tools.cisco.com/bugsearch/bug/CSCtn42790/?reffering_site=dumpcr

Thanks,

Jack

[try.chhay]

Hi,

Thanks Jack for your reference link. It's known as effected version as well and also no release planned to fix this bug. Any idea whether it is harmful to device or not if it has this bug?

Thank you,

Try Chhay

[John Cui]

Hi Try Chhay,

Since the utilization of this process is just 10-30%, there will not impact to service.

Also, if you have other processes who taking most utilization of CPU, then it could have some impact.

For this bug, since it is confirmed as EXPECTED behavior by development team, there won't be fixed version.

Thanks,

Jack

[try.chhay]

Hi Jack,

That's very helpful information. Currently the whole CPU utilization from 20% to 30% on that switch so that it might be not a problem.

Thank you,

Try

[InayathUlla Sharieff]

Try,

As Jack mentioned that we need not have to worry when the cpu is around the percentage mentioned only you need to worry about the constent spike on the cpu(show proc cpu history).

Regards

Inayath

[try.chhay]

Hi Inayath,

There has CPU spike on that device based on show process cpu history command that make me concern about it. I need to research for how to figure it out. Any idea or advise for this?

(hostname-remove)#    show proc cpu history
                                                              
    3322222222222222222222333332222222222222222222222222222222
    1188888777777777777777111119999977777888887777777777777799
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)
                                                              
    3333333333333332332332333333333333333333333333333283333333
    1032010011333019009109210030001111015100101110400992101220
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%
                                                                          
    8999999999999999999998999999999999999899999999999999999999999999989999
    9353254042244540414449141334341342543933533544033424434444442512273454
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%

Thank you,

Try

[John Cui]

Hi Try,

Please consider configure EEM for get detail info of CPU spike.

EEM config:

config t

event manager applet cpu_stats

event snmp oid 1.3.6.1.4.1.9.9.109.1.1.1.1.3.1 get-type exact entry-op gt entry-val 80 exit-op lt exit-val 70 poll-interval 5

action 1.1 syslog msg "------HIGH CPU DETECTED----, CPU: $_snmp_oid_val %"

action 1.2 cli command "enable"

action 1.3 cli command "show clock | append flash:cpu_stats.txt"

action 1.4 cli command "show proc cpu sort | append flash:cpu_stats.txt"

action 1.5 cli command "show interfaces | append flash:cpu_stats.txt"

action 1.7 cli command "sho spann detail | append flash:cpu_stats.txt"

action 1.8 cli command "show proc cpu sort | append flash:cpu_stats.txt"

action 1.9 cli command "sho log | append flash:cpu_stats.txt"

action 1.10 cli command "show ip traffic | append flash:cpu_stats.txt"

-to remove the script, once it is not needed anymore

conf t

no event manager applet cpu_stats

end

Thanks,

Jack

[John Cui]

I think you need replace the store path from "flahs" to "nvram".

[Mduplessie1]

Yeah,  it doesn't appear fixing this is big priority.  In 15.0(2) se4 - se7 we see consistent 20% CPU utilization....  some are reporting 40-50% with 15.2 code.

[superflybry]

Can confirm we see issue same with version 15.2(1)E1.

WS-C3750X-48P-L

      333333333333444443333333333333333333344444333333333344444444
      443333333333111116666655555555558888866666999994444444444111
  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)

      444444544454544435454544544545457555543554444444544445544454
      474976085707476984418443247365625334678359585589095340167804
  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 minute (last 60 minutes)
              * = maximum CPU%   # = average CPU%

                                                 1
      766797678676788776785798866889767677998797908987669898766789988988977788
      585606352313085350916594675260658315338945008895888897576000942286959783
  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%