Access switch CPU sometimes high CPU usage

[Ethan and Mia]

Hi all , I am facing some issue

My access switch shown cpu usage history sometime cpu up to 70%  butt avg still normal  (see attached file) 

Could you please suggest how to troubleshoot it , spanning tree was on , all switches 

[Mark Elsen]

           https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/troubleshooting/cpu_util.html

 M.

[Leo Laohoo]

Post the complete output to the following commands: 

sh version
sh proc cpu sort | ex 0.00
dir

[Ethan and Mia · Accepted solution]

Hi , 

out put of sh proc cpu | ex 0.00 as belew

G01#sh processes cpu sorted | ex 0.00
CPU utilization for five seconds: 11%/1%; one minute: 12%; five minutes: 13%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
73 9560819 1842318 5189 4.97% 4.97% 4.98% 0 HaySel LinkState
80 1629258 4597083 354 0.85% 0.83% 0.85% 0 Haysel LED contr
74 1340406 184774 7254 0.69% 0.69% 0.69% 0 hpm counter proc
72 1009953 231949 4354 0.61% 0.52% 0.52% 0 hpm main process
112 883217 1137210 776 0.50% 0.45% 0.44% 0 Spanning Tree
65 764600 184544 4143 0.41% 0.39% 0.40% 0 AgingTask
90 38952 171284 227 0.03% 0.02% 0.02% 0 CDP Protocol
103 34822 5509191 6 0.01% 0.01% 0.01% 0 IP ARP Retry Age
173 102921 945362 108 0.01% 0.04% 0.05% 0 IGMPSN

and output off dir

G01#dir
Directory of flash:/

513 -rwx 2072 Nov 26 2020 13:37:08 +07:00 multiple-fs
516 drwx 2048 Mar 10 2025 01:14:30 +07:00 c2960l-universalk9-mz.152-6.E2b
749 drwx 2048 Mar 10 2025 01:14:30 +07:00 dc_profile_dir
258 -rwx 34 Aug 21 2020 18:40:47 +07:00 pnp-tech-time
259 -rwx 3774 Aug 21 2020 18:40:49 +07:00 pnp-tech-discovery-summary
261 -rwx 5790 Nov 21 2020 17:05:58 +07:00 config.text
774 -rwx 1923 Nov 21 2020 17:05:58 +07:00 private-config.text
260 -rwx 856 Aug 21 2020 18:40:55 +07:00 vlan.dat
2 drwx 2048 Mar 1 1993 07:00:02 +07:00 lost+found

244711424 bytes total (198062080 bytes free)

Thank you very much for your time and assistance

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@Leo Laohoo wrote:

Post the complete output to the following commands: 

sh version
sh proc cpu sort | ex 0.00
dir

---

[Leo Laohoo · Accepted solution]

The screenshot you've provided shows a CPU spike at 11-, 21-, 31-, 41, 51 minutes -- ten minute interval every time. 

The graph shows the spike hitting <60%.  Not really a concern to me.