We can monitor system resource usage through the glances tool, which also supports cross-platform monitoring.

Options

Here are some options for glances command:

Option	Description
‑‑disable-process	Process module is not included when starting glances to save CPU expenses.
-0 or ‑‑disable-irix	The CPU usage of the task is divided by the logical CPU number.
-1 or ‑‑percpu	Individual usage of each CPU is shown when the glances starts.
-2 or ‑‑disable-left-sidebar	Network, Disk I/O, Filesystem and Sensors modules are not included when starting glances.
-3 or ‑‑disable-quicklook	The top menu does not load the quick look module when glances starts.
-4 or ‑‑full-quicklook	When glances starts, the top menu loads only quick look and load modules.
‑‑disable-bold	Do not highlight text headings when glances starts.
‑‑enable-process-extended	Show additional information about the top process.
-p PORT or ‑‑port PORT	Specify the TCP port number on the client or server side. The default port number is 61209.
-B BIND_ADDRESS or ‑‑bind BIND_ADDRESS	Bind the server side to a given IPv4 or IPv6 address or hostname.
‑‑username	Specify the username of a client or server.
‑‑password	Specify the password of a client or server.
-q or ‑‑quiet	Start but do not display the interactive graphical interface.

Interactive Commands

Here are some interactive commands for glances:

Option	Description
ENTER	Sets the process name to display.
q or ESC or CTRL+C	Exits the current Glances session.

Here are some show or hide commands for glances:

Option	Description
b	Display the network I/O in bits or bytes.
d	Shows or hides disk I/O statistics.
e	Shows or hides the statistics for top expansion.
E	Clears the process name used to match.
f	Shows or hides file system and directory monitoring statistics.
F	Displays the space used by the file system or free space.
h	Shows or hides the help window.
l	Shows or hides log messages.
n	Shows or hides network statistics.
T	Displays merged network I/O.
U	Displays the total amount of network I/O transmissions.
z	Shows or hides process statistics.
0	Activate or inactivate Irix/Solaris mode. Task CPU usage is divided by the total number of CPUs.
1	Displays global CPU statistics or statistics for each CPU.
2	Shows or hides the left toolbar.
3	Shows or hides the quick look module.
4	Shows or hides the quick look and load module.
/	Displays the command line or command name.

Here are some sorting commands for glances:

Option	Description
a	Automatic sorting. If CPU is greater than 70% than sort by CPU usage, if MEM is greater than 70% than sort by MEM usage, if CPU iowait is greater than 60% than sort by I/O read and write.
c	Sort by CPU usage.
i	Sort by I/O rate.
m	Sort by memory usage.
p	Sort by process name.
t	Sort by CPU times.
u	Sort by user.

Before we start using glances, we need to install it first:

                    
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                          yum install glances -y

                    
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                          glances --disable-process

                    
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                          glances -0    # This is equivalent to glances --disable-irix

                    
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                          glances -1    # This is equivalent to glances --percpu

                    
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                          glances -2    # This is equivalent to glances --disable-left-sidebar

                    
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                          glances -3    # This is equivalent to glances --disable-quicklook

                    
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                          glances -4    # This is equivalent to glances --full-quicklook

                    
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                          glances --disable-bold

                    
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                          glances --enable-process-extended

References Glances: An Eye on your system, Command-Line Options, Interactive Commands