System Health Monitoring
Run a System Baseline for Core Resources
105
Best Practice User Guide for the Catalyst 3850 and Catalyst 3650 Switch Series
Step 3 Use the history command to display a graph of sustained CPU utilization.
This graph helps to formulate patterns. For example, if you observe a spike to 100 percent every 30
minutes, you can conclude that something might be polling the switch on a regular schedule. Examine
your SNMP configuration to help determine the cause.
Reference:
For detailed information to help troubleshoot your high CPU usage concerns, see the Catalyst 3850
Series Switch High CPU Usage Troubleshooting document.
show process cpu sorted | ex 0.00
Core 0: CPU utilization for five seconds: 4%; one minute: 5%; five minutes:
5%
Core 1: CPU utilization for five seconds: 2%; one minute: 1%; five minutes:
1%
Core 2: CPU utilization for five seconds: 0%; one minute: 0%; five minutes:
0%
Core 3: CPU utilization for five seconds: 1%; one minute: 2%; five minutes:
1%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
5639 1598657 15898882 68 0.98 1.06 1.08 1088 fed
8503 1554112 10180648 52 0.54 0.50 0.44 0 iosd
8499 982266 14501353 18 0.20 0.15 0.15 0 wcm
5640 427135 54197163 16 0.05 0.10 0.11 0
platform_mgr
6170 502150 9040937 55 0.05 0.01 0.01 0 obfld
6177 2057130 87345912 23 0.05 0.01 0.03 0 pdsd
show process cpu history
History information for system:
1111122222222222222222222
111111111111111111111111111111222225555588888888886666666666
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)
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