Big-IP Monitoring

Hi,

 

 

You should go to ask F5 and retrieve the document bigip_nsm_guide_943.pdf.pdf which is the BIG-IP® Network and System Management Guide.

 

 

Then check chapter 16 page 22.

 

 

You have here a lots of detailled information about how to calculate CPU usage.

 

 

HTH

 

 

Extract:

 

 

You can use SNMP commands with various OIDs to gather and interpret

 

data on CPU use on the BIG-IP system. Specifically, you can gather and

 

interpret data for two different graph metrics: TMM CPU Usage and

 

CPU[0-n].

 

To gather and interpret the data for this metric, you must perform some

 

polling and calculations:

 

• First, you must use the OID to perform two separate polls, at an interval

 

of your choice.

 

• Next, you calculate the delta of the two poll values.

 

• Finally, you perform a calculation on the OID delta.

 

 

Table 16.13 shows the individual OIDS that you must poll, retrieving two

 

separate poll values for each OID.

 

 

CPU[0-n]

 

sysMultiHostCpuUser (.1.3.6.1.4.1.3375.2.1.7.5.2.1.4)

 

sysMultiHostCpuNice (.1.3.6.1.4.1.3375.2.1.7.5.2.1.5)

 

sysMultiHostCpuIdle (.1.3.6.1.4.1.3375.2.1.7.5.2.1.6)

 

sysMultiHostCpuSystem (.1.3.6.1.4.1.3375.2.1.7.5.2.1.7)

 

sysMultiHostCpuIrq (.1.3.6.1.4.1.3375.2.1.7.5.2.1.8)

 

sysMultiHostCpuSoftirq (.1.3.6.1.4.1.3375.2.1.7.5.2.1.9)

 

sysMultiHostCpuIowait (.1.3.6.1.4.1.3375.2.1.7.5.2.1.10)

 

TMM

 

CPU Usage sysStatTmTotalCycles (.1.3.6.1.4.1.3375.2.1.1.2.1.41)

 

sysStatTmIdleCycles (.1.3.6.1.4.1.3375.2.1.1.2.1.42)

 

sysStatTmSleepCycles (.1.3.6.1.4.1.3375.2.1.1.2.1.43)