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iec1128759
Beginner

express 500 cpu high utilization

Hi, I have a problem with a switch catalyst express 500, the cpu is too high and when I enter the command "show process cpu sorted 5sec", I can see that the "HULC prs macro p" is consuming a lot of percentege of the CPU, someone can explain me about this??? or if I can reduce this process or something like that...


CPU utilization for five seconds: 99%/0%; one minute: 96%; five minutes: 92%

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

  82  1377195379  20942070      65762 74.20% 71.89% 69.46%   0 HULC prs macro p <-------------

  84   256342783  21749262      11786 13.69% 13.38% 13.10%   0 HRPC qos request

  76    62320261  61923515       1006  4.93%  4.19%  3.92%   0 Hulc LED Process

the show proccess cpu history:

                                  11111              11111     
     9999999999999999999999999999900000999999999999990000099999
     9999999999999999999999999999900000999999999999990000099999
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)
 
     1111111 111111111111111111111111111111111 11111111111  111
     0000000900000000000000000000000000000000090000000000099000
     0000000900000000000000000000000000000000090000000000099000
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%
 
     1111111111111111111111111111111111111111111111111111111111111111111111
     0000000000000000000000000000000000000000000000000000000000000000000000
     0000000000000000000000000000000000000000000000000000000000000000000000
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%

The  version of the IOS is 12.2(25)FY

Greetings!

2 REPLIES 2
Shashank Singh
Cisco Employee

Hi,

"HULC prs macro p" process is related to smartports. High cpu utilization as a result of this process could be due to a phone not getting its ip address thru dhcp etc..

Other reason can be the following bug:

CSCsg17027 High CPU utilization all the time - 99% with IP Phones and Voice Vlan

The problem is that in the software we are reapplying qos commands everytime the DHCP lease renews without checking if the subnet is the same and update is needed, or if the port role is already applied on the port. As a result these requests queue up at HRPC and creates a backlog, resulting in constant high CPU utilization and slow network throughput. It is addressed in this fix.

Fixed on version 12.2(25)SEG2.

Hope this helps,

Shashank

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