How to monitor Real time bandwidth - bmon tool

To monitor bandwidth time using bmon tool

Bandwidth leakage will impact a delay response from any running application. Bmon or Bandwidth Monitoring tool is used for debugging and monitoring bandwidth. It retrieves statistics from other input modules. This article guides with the installation of bmon tool.

To Install bmon

Before installing bmon, install the wajig package by using the following command.

root@user1:~# apt-get install wajig
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  aptitude aptitude-common libcwidget3v5
Suggested packages:
  apt-xapian-index aptitude-doc-en | aptitude-doc debtags tasksel
  libcwidget-dev reportbug apt-move dpkg-repack alien apt-file deborphan vrms
  apt-show-versions dctrl-tools debsums netselect-apt chkconfig
The following NEW packages will be installed:
  aptitude aptitude-common libcwidget3v5 wajig
0 upgraded, 4 newly installed, 0 to remove and 268 not upgraded.
Need to get 2,383 kB of archives.
After this operation, 10.1 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
.
.
update-alternatives: using /usr/bin/aptitude-curses to provide /usr/bin/aptitude (aptitude) in auto mode
Setting up wajig (2.17) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...

Now install the bmon using wajig command.

root@user1:~# wajig install bmon
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  libconfuse-common libconfuse0 libnl-route-3-200
The following NEW packages will be installed:
  bmon libconfuse-common libconfuse0 libnl-route-3-200
0 upgraded, 4 newly installed, 0 to remove and 268 not upgraded.
Need to get 193 kB of archives.
After this operation, 745 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
.
.
Setting up libconfuse0:amd64 (2.7-5) ...
Setting up libnl-route-3-200:amd64 (3.2.27-1) ...
Setting up bmon (1:3.8-2build1) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...

To launch bmon

Once the installation is completed, run bmon.

root@user1:~# bmon

Bmon graph is divided into the following parts

The first row &rarr displays the available interfaces, receive and transfer transmits. This rows is portrayed by the letter l meaning list view.
The second row &rarr displays the graphical statistics. If the graph is not visible, then hit g.
The third row &rarr displays the full statistics of the receive and transfer activity.
The fourth row &rarr displays any miscellaneous additional information.

bmon operates with the cursor mode by default.

To Set input modules

Use -i option to define modules in bmon.

root@user1:~# bmon -i proc

To know more input modules hit question mark button (?)

To Set output modules

Use -o option to set the output modules.

root@user1:~# bmon -o ascii
Interfaces RX bps pps % TX bps pps %
lo 0 0 0 0
qdisc none (noqueue) 0 0 0 0
ens33 0 0 0 0
qdisc none (pfifo_fast) 0 0 0 0
Interfaces RX bps pps % TX bps pps %
lo 0 0 0 0
qdisc none (noqueue) 0 0 0 0
ens33 0 0 0 0
qdisc none (pfifo_fast) 0 0 0 0
Interfaces RX bps pps % TX bps pps %
lo 0 0 0 0
qdisc none (noqueue) 0 0 0 0
ens33 0 0 0 0
qdisc none (pfifo_fast) 0 0 0 0 . . .

To set specific interface

Use -p option to set a specific interfaces.

root@user1:~# bmon -p ens33

To set read interval

To alter the read interval in bmon, use -r option.

By default, Bmon displays the status for every 1 seconds

root@user1:~# bmon -r 10

utilise the following command to know more about bmon.

root@user1:~# bmon --help