You can configure how the Machine Agent calculates the amount of free and used memory on Linux machines. By default, the agent calculates any slab-reclaimable memory as used (not free) memory. To configure the agent to calculate slab-reclaimable memory as free (not used) memory, run Machine Agent with the following command-line argument:

-Dappdynamics.machine.agent.extensions.countSlabReclaimableAsFreeMem=true

• Memory Usage (in Server Dashboard)
• Memory Used %, Memory Used MB, Memory Free %, and Memory Free MB (in Metric Browser)