Controller Based WLANs

How does MMS calculate controller CPU utilization?

by on ‎07-02-2014 12:11 PM

Product and Software: This article applies to ArubaOS 2.5 and later and MMS 2.1 and later.

 

MMS uses SNMP to get the CPU utilization information.

 

The value that SNMP returns should be user + system load. In the CLI, we split them up to give more visibility. In SNMP, the table not only shows the control plane CPU usage, but also the network processor load. Where there is no concept of user and kernel, we combine both and report it as the total load.

 

From the CLI, the network processor utilization is captured by using the following command:

 

show datapath utlization

 

The Control Processor CPU is obtained by using the following commands:

 

show cpuload all versions

show cpuload current versions 3.x

 

If you notice high CPU usage, find out which process is being taxed by using the following command:

 

show processes sort-by cpu

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