How does the CDM probe calculate the Physical Memory Utilization on Linux

Document ID : KB000109696
Last Modified Date : 03/08/2018
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Question:
How is the Physical Memory utilization calculated by the "cdm" probe on a Linux platform?
Answer:
Here is the calculation we use.
The input is pulled from "/proc/meminfo"

without mem_buffer_used(Default Behavior) or mem_buffer_used = no
Physical Total = MemTotal Physical Free = MemFree PhysicalUsed = MemTotal –( MemFree + Buffers + Cached)

Here is the calculation we use with mem_buffer_used = "yes" enabled:
Physical Total = MemTotal Physical Free = MemFree PhysicalUsed = MemTotal –( MemFree)