[mrtg] Windows CPU Usage (hrProcessorLoad vs SNMP-Informant)

Shane Presley shane.presley at gmail.com
Tue Jul 12 17:01:44 MEST 2005


I've got some Windows 2K, 4 processor boxes.  I have installed
SNMP-Informant on them, and monitor memory and lots of other stuff.

One question about watching the CPU.  The standard windows MIB exists
hrProcessorLoad.  SNMP-Informant also has an OID

The problem is, my graphs for those two are very different.  In fact
even a walk shows different results...

snmpwalk -v2c -c public server hrProcessorLoad
HOST-RESOURCES-MIB::hrProcessorLoad.1 = INTEGER: 2
HOST-RESOURCES-MIB::hrProcessorLoad.2 = INTEGER: 3
HOST-RESOURCES-MIB::hrProcessorLoad.3 = INTEGER: 2
HOST-RESOURCES-MIB::hrProcessorLoad.4 = INTEGER: 5

snmpwalk -v2c -c public server
SNMPv2-SMI::enterprises.9600. = Gauge32: 25
SNMPv2-SMI::enterprises.9600. = Gauge32: 0
SNMPv2-SMI::enterprises.9600. = Gauge32: 0
SNMPv2-SMI::enterprises.9600. = Gauge32: 0

The results are always similar.  hrProcessorLoad returns low numbers
(5 or under) for each processor.  The SNMP-Informant OID always
returns 0, or some high number (25).

The question is, what are these two really trying to tell me?  Which
is CPU Utilization %?


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