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Sunday, November 17, 2013

Cisco switch Hulc LED process




While working on Cisco c2960-S I noticed a relative high CPU utilization from a process called: Hulc LED process. This process is responsible for port link detection.

Note the process utilization:

SW# sh processes cpu sorted 1min
CPU utilization for five seconds: 20%/1%; one minute: 21%; five minutes: 20%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 138    46080263   8555487       5386 10.89% 10.69% 10.76%   0 Hulc LED Process
 292       67117       343     195676  0.00%  1.33%  0.33%   0 hulc running con
 107     3052131    402562       7581  1.09%  0.76%  0.74%   0 hpm counter proc
   4     3291391    183587      17928  0.00%  0.58%  0.71%   0 Check heaps      
 193     1430354   3734026        383  0.39%  0.53%  0.54%   0 Spanning Tree   
 102        1275       506       2519  1.29%  0.52%  0.25%   1 SSH Process     
 207      787430    402585       1955  0.29%  0.29%  0.28%   0 PI MATM Aging Pr
 147      859812     81139      10596  0.19%  0.19%  0.19%   0 HQM Stack Proces
   8      718295      6766     106162  0.00%  0.13%  0.13%   0 Licensing Auto U
 103      562016   5191334        108  0.09%  0.12%  0.14%   0 hpm main process
  69      365493   1865819        195  0.09%  0.07%  0.09%   0 RedEarth Tx Mana
 178       26413    136403        193  0.00%  0.06%  0.03%   0 IP Input        
  70      275384  17099996         16  0.00%  0.05%  0.05%   0 RedEarth Rx Mana
 277      101138      4403      22970  0.00%  0.04%  0.02%   0 VLAN Manager    
  10      281585    819737        343  0.00%  0.03%  0.05%   0 ARP Input       
 167      126435     79293       1594  0.00%  0.03%  0.02%   0 CDP Protocol    
 148       89198    162239        549  0.00%  0.03%  0.00%   0 HRPC qos request
  51      112753     81121       1389  0.09%  0.02%  0.00%   0 Compute load avg
  90       79497  11382877          6  0.00%  0.02%  0.00%   0 HLFM address ret
  38      137240      6864      19994  0.00%  0.02%  0.00%   0 Per-minute Jobs 
  64       73121  14914414          4  0.00%  0.02%  0.00%   0 Draught link sta
 290       25395    184969        137  0.00%  0.01%  0.00%   0 LACP Protocol   
 130       78811   1986300         39  0.00%  0.01%  0.00%   0 Hulc Storm Contr
  89       56164    402586        139  0.09%  0.00%  0.00%   0 HLFM aging proce
 228       53656    405943        132  0.00%  0.00%  0.00%   0 Socket Timers   
 139       24168    297706         81  0.00%  0.00%  0.00%   0 HL3U bkgrd proce
 233       25970    817312         31  0.00%  0.00%  0.00%   0 DHCPD Receive   
  88      142355  11363812         12  0.00%  0.00%  0.00%   0 HLFM address lea
  61        8382   1609843          5  0.00%  0.00%  0.00%   0 HUSB Console    
 180        5492    788015          6  0.00%  0.00%  0.00%   0 IP ARP Track    
  94        4991    135310         36  0.00%  0.00%  0.00%   0 HVLAN main bkgrd
         

In order to solve this issue you will have to shut down (administratively shut) all ports which are not connected.

The result:

CPU utilization for five seconds: 8%/0%; one minute: 9%; five minutes: 8%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 107     3075484    405876       7577  0.69%  0.68%  0.65%   0 hpm counter proc
 193     1449905   3757786        385  0.49%  0.49%  0.49%   0 Spanning Tree   
 102         883       263       3357  0.69%  0.44%  0.20%   1 SSH Process     
   4     3318268    185088      17928  0.00%  0.44%  0.64%   0 Check heaps     
 207      796688    405899       1962  0.29%  0.26%  0.27%   0 PI MATM Aging Pr
 138    46115118   8634102       5341  0.09%  0.25%  0.22%   0 Hulc LED Process
   8      724256      6822     106164  0.00%  0.19%  0.13%   0 Licensing Auto U
 147      866823     81805      10596  0.19%  0.19%  0.19%   0 HQM Stack Proces
 167      127960     80072       1598  0.09%  0.06%  0.01%   0 CDP Protocol    
 178       26818    138168        194  0.29%  0.06%  0.01%   0 IP Input        
  51      113897     81787       1392  0.09%  0.04%  0.01%   0 Compute load avg
  10      283352    825517        343  0.00%  0.03%  0.04%   0 ARP Input       
  38      138421      6921      20000  0.00%  0.03%  0.00%   0 Per-minute Jobs 
 103      563737   5237463        107  0.00%  0.02%  0.02%   0 hpm main process
  64       73760  15040205          4  0.00%  0.01%  0.00%   0 Draught link sta
 148       89937    163573        549  0.00%  0.01%  0.00%   0 HRPC qos request
  33       67699    473302        143  0.00%  0.01%  0.00%   0 Net Background  
  90       79862  11478315          6  0.00%  0.00%  0.00%   0 HLFM address ret
  70      276251  17256414         16  0.00%  0.00%  0.00%   0 RedEarth Rx Mana
 139       24327    300155         81  0.09%  0.00%  0.00%   0 HL3U bkgrd proce
  37      197463    406062        486  0.00%  0.00%  0.00%   0 Per-Second Jobs

You can see that the CPU utilization has decreased significantly.

1 comment:

  1. כתבה מעניינת . אם אתם מחפשים { קבלן שלד } הכנסו לאתר של האוס בנייה וייזמות קבלן שלד בדרום וקבלן בניין עד גמר

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