[c-nsp] Cisco 3750 High CPU

David Prall dcp at dcptech.com
Wed Apr 7 15:37:29 EDT 2010


I'd guess a spanning tree loop. The HULC process is what updates the pretty
lights on the switch. So much is happening that it is having to change all
the colors constantly.

What other messages are you seeing. 

--
http://dcp.dcptech.com


> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Chris Lane
> Sent: Wednesday, April 07, 2010 3:17 PM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Cisco 3750 High CPU
> 
> Hello,
> 
> I have all the sudden taken extremely high CPU:
> sh proc cpu sorted | e 0.0
> CPU utilization for five seconds: 99%/27%; one minute: 95%; five
> minutes:
> 92%
>  PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
>  251     2985921     15274     195490 39.29% 11.05%  6.01%   0 hulc
> running
> con
>  171   630974187 249381380       2530 10.38%  9.27%  9.45%   0 Spanning
> Tree
> 
>  117   133871232 301668428        443  4.63%  8.34%  9.47%   0 Hulc LED
> Process
>   68     3766455 374577924         10  4.15%  3.66%  3.20%   0 HLFM
> address
> lea
>  137   221859624  12599002      17609  2.39%  2.02%  2.05%   0 PI MATM
> Aging
> Pr
>  168   175580828 496683600        353  1.91%  3.89%  2.90%   0 IP Input
> 
>   52     8324282 665636083         12  0.79%  0.43%  0.35%   0 Fifo
> Error
> Detec
> 
> I know this isn't much but could anyone offer assistance?
> 
> Thanks
> Chris
> 
> 
> 
> --
> //CL
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