MIB: CISCO-PROCESS-MIB
The overall CPU busy percentage in the last 5 minute
period. This object deprecates the avgBusy5 object from
the OLD-CISCO-SYSTEM-MIB. This object is deprecated
by cpmCPUTotal5minRev which has the changed range
of value (0..100).
Reference: http://www.cisco.com/c/en/us/support/docs/ip/simple-network-management-protocol-snmp/15215-collect-cpu-util-snmp.html