Memory Usage - Red Hat LINUX 7.2 - OFFICIAL LINUX CUSTOMIZATION GUIDE Manual

Section 20.2:Memory Usage
Figure 20–1 GNOME System Monitor

20.2 Memory Usage

The free command displays the total amount of physical memory and swap space for the system as
well as the amount of memory that are used, free, shared, in kernel buffers, and cached.
Mem:
-/+ buffers/cache:
Swap:
The command free -m shows the same information in megabytes, which are easier to read.
Mem:
-/+ buffers/cache:
Swap:
If you would like to use a graphical interface with free, you can use GNOME System Monitor. To
start it, go to the
GNOME Main Menu
gtop at a shell prompt. Then choose the
total used
256812 240668
108300
265032 780
total used
250 235
105
258 0
Button =>
Memory Usage
free shared
16144 105176
148512
264252
free shared
15 102
145
258
=>
Programs System
tab.
buffers
50520
buffers
49
=> or type
System Monitor
199
cached
81848
cached
79