Oracle Linux: System RAM does not Match with the Value in OCI Console

Applies to:

Oracle Cloud Infrastructure - Version N/A and later

Oracle Linux 7 and later

Goal:

Understand why Oracle Linux does not show the same amount of Memory (RAM) that is assigned in OCI Console.

Solution:

This system was created with 4GB of RAM, but Oracle Linux shows only 3GB RAM.

[opc@<hostname>  ~]$ free -g
               total        used        free      shared  buff/cache   available
Mem:               3           2           2           0           0           1
Swap:              3           0           3

Using the free -g command, the total RAM will be rounded up to the nearest number

free -k or free -m will show the real available RAM for the OS.

[opc@a<hostname>  ~]$ free -k
               total        used        free      shared  buff/cache   available
Mem:         3540892     2708896     1961448        8896     1025016      831996
Swap:        3539964