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Wednesday, 23 November 2011

The CPU And Memory Monitoring MIB

The CPU And Memory Monitoring MIB

The UCD-SNMP-MIB MIB keeps track of a number of key performance MIB objects, including the commonly used ones in Table 23-1.

Table 23-1 Important Objects In The UCD-SNMP-MIB MIB

UCD-SNMP-MIB Object Variable MIB Type MRTG Type Description
ssCpuRawUserCounter Counter

Total CPU usage by applications run by nonprivileged users since the system booted. Adding the user, system, and nice values can give a good approximation of total CPU usage..

ssCpuRawSystemCounterCounter Total CPU usage by applications run by privileged system processes since the system booted.
ssCpuRawNice CounterCounterTotal CPU usage by applications running at a nondefault priority level.
ssCpuRawIdleCounterCounter

The percentage of the time the CPU is running idle. Subtracting this value from 100 can give a good approximation of total CPU usage.

memAvailRealIntegerGauge Available Physical Memory Space On The Host

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