Red Hat ENTERPRISE LINUX 3 - INTRODUCTION TO SYSTEM ADMINISTRATION Administration Manual page 32

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2.5.2.1. The GNOME System Monitor — A Graphical
If you are more comfortable with graphical user interfaces, the GNOME System Monitor may be
more to your liking. Like
system status, process counts, memory and swap utilization, and process-level statistics.
However, the GNOME System Monitor goes a step further by also including graphical representa-
tions of CPU, memory, and swap utilization, along with a tabular disk space utilization listing. An
example of the GNOME System Monitor's Process Listing display appears in Figure 2-1.
Figure 2-1. The GNOME System Monitor Process Listing Display
Additional information can be displayed for a specific process by first clicking on the desired process
and then clicking on the More Info button.
To display the CPU, memory, and disk usage statistics, click on the System Monitor tab.
2.5.3.
vmstat
For a more concise understanding of system performance, try
it is possible to get an overview of process, memory, swap, I/O, system, and CPU activity in one line
of numbers:
procs
r b swpd free
0 0 5276 315000 130744 380184
The first line divides the fields in six categories, including process, memory, swap, I/O, system, and
CPU related statistics. The second line further identifies the contents of each field, making it easy to
quickly scan data for specific statistics.
, the GNOME System Monitor displays information related to overall
top
memory
buff cache si
1
Chapter 2. Resource Monitoring
top
vmstat
swap io
so bi bo
1 2 24
. Using this resource monitor,
system
in cs us sy id wa
14 50 1 1 47
cpu
0