Cisco Catalyst 9500 Manual page 354

Example: Verifying the Problem and Cause for High CPU Utilization
Table 20: Troubleshooting CPU Utilization Problems
Type of Problem
Interrupt percentage value is
almost as high as total CPU
utilization value.
Total CPU utilization is greater
than 50% with minimal time
spent on interrupts.
System Management Configuration Guide, Cisco IOS XE Amsterdam 17.2.x (Catalyst 9500 Switches)
338
Cause
The CPU is receiving too many
packets from the network.
One or more Cisco IOS process
is consuming too much CPU time.
This is usually triggered by an
event that activated the process.
Troubleshooting the Software Configuration
Corrective Action
Determine the source of the network
packet. Stop the flow, or change the
switch configuration. See the section on
"Analyzing Network Traffic."
Identify the unusual event, and
troubleshoot the root cause. See the
section on "Debugging Active
Processes."