[c-nsp] Cisco Switch (2960G-48TC-L) CPU Utilization

Farooq Razzaque farooq_mcp at hotmail.com
Sun Feb 26 01:57:15 EST 2012



Dear 


 
Please have a look at the below switch's CPU utilization which is 100% (interrupt percentage) almost all the time. But CPU history is not reflecting this utilization.
 
Please note that only the interrupt percentage (/99%) is increasing while the other part (0%) is zero which is showing the CPU utilization due to active system processes.
 
This is the management switch and some network devices management interface is connected to this switch
 
I may be the cosmetic bug in IOS 
 
Switch model: Cisco WS-C2960G-48TC-L 



http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/troubleshooting/cpu_util.html
 
In this output, the CPU utilization for the last 5 seconds shows two numbers (5%/0%). 
•The first number, 5%, tells how busy the CPU was in the past 5 seconds. This number is the total CPU utilization for all the active system processes, including the percentage of time at the interrupt level. 
•The second number, 0%, shows the percentage of time at the interrupt level in the past 5 seconds. The interrupt percentage is the CPU time spent receiving packets from the switch hardware. The percentage of time at interrupt level is always less than or equal to the total CPU utilization.  		 	   		  
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