### How to the CAPC calculate the Average Memory Utilization

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#### Products

CA Infrastructure Management CA Infrastructure Management CA Performance Management - Usage and Administration CA Performance Management - Data Polling

#### Issue/Introduction

The CAPC report show the Average Memory Utilization but is need to know if value is correct

PM 3.6

#### Resolution

Average Memory Utilization calculate

Using as example the vendor certification ‘Cisco CPM Memory’

Formula for Utilization:
snmpProtectedDiv ((100.0 * cpmCPUMemoryUsed),(cpmCPUMemoryFree + cpmCPUMemoryUsed))

cpmCPUMemoryUsed = 1.3.6.1.4.1.9.9.109.1.1.1.1.12.\$1

cpmCPUMemoryFree = 1.3.6.1.4.1.9.9.109.1.1.1.1.13.\$1

OID’s values from Spectrum MIB tools:
cpmCPUMemoryUsed           7          3886600          Gauge 1.3.6.1.4.1.9.9.109.1.1.1.1.12
cpmCPUMemoryFree            7          64080  Gauge 1.3.6.1.4.1.9.9.109.1.1.1.1.13

Calculating:
Memory Utilization = cpmCPUMemoryUsed / cpmCPUMemoryUsed + cpmCPUMemoryFree
= (3886600) / (3886600 + 64080)

= 3886600 / 3950680

= 0.9837800074923811 * 100

= 98.37%

With this evidence we can to affirm that the Average Memory Utilization calculate is correctly

You can to check with Device Administrator if this information is correct

Note: If the OID has index the calculate is:
cpmCPUMemoryUsed:
1.3.6.1.4.1.9.9.109.1.1.1.1.12.19, Gauge , 2819964
1.3.6.1.4.1.9.9.109.1.1.1.1.12.20, Gauge , 3107712

cpmCPUMemoryFree:
1.3.6.1.4.1.9.9.109.1.1.1.1.13.19, Gauge , 1157900
1.3.6.1.4.1.9.9.109.1.1.1.1.13.20, Gauge , 870152

Memory Utilization = cpmCPUMemoryUsed / cpmCPUMemoryUsed + cpmCPUMemoryFree
= (2819964 + 3107712) / ((2819964 + 3107712) + (1157900 + 870152))

= 5927676 / (5927676 + 2028052)

= 5927676 / 7955728

= 0.74508278815 * 100

= 74.51%