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)