total        used        free      shared  buff/cache   available
Mem:            7937         836        6758           6         343        6831
Swap:              0           0           0
               total        used        free      shared  buff/cache   available
Mem:            7937         896        6849           6         192        6804
Swap:              0           0           0
               total        used        free      shared  buff/cache   available
Mem:            7937         834        6752           6         350        6833
Swap:              0           0           0
               total        used        free      shared  buff/cache   available
Mem:            7937         866        6866           6         204        6828
Swap:              0           0           0