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Symantec Messaging Gateway memory usage and memory free do not match total memory


Article ID: 152191


Updated On:


Messaging Gateway


While monitoring the memory usage on a Symantec Messaging Gateway (SMG) system, the "Memory Usage" and "Memory Free" columns do not add up to the total memory available on the SMG appliance or virtual machine.



This is expected behavior due to how current linux kernels manage memory. The SMG Status > Host page only displays the "used" and "free" values for memory utilization but does not include the "shared", "buff/cache", or "available" values:

[[email protected] ~]$ free
              total        used        free      shared  buff/cache   available
Mem:        3861616     2001780      554708       81352     1305128     1465916
Swap:      10534904      998400     9536504


For more information on linux memory management, please see the following articles: