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APL:20191030 Viewing network bandwidth usage with bmon
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@ -1,5 +1,5 @@
[#]: collector: (lujun9972)
[#]: translator: ( )
[#]: translator: (wxy)
[#]: reviewer: ( )
[#]: publisher: ( )
[#]: url: ( )
@ -7,14 +7,15 @@
[#]: via: (https://www.networkworld.com/article/3447936/viewing-network-bandwidth-usage-with-bmon.html)
[#]: author: (Sandra Henry-Stocker https://www.networkworld.com/author/Sandra-Henry_Stocker/)
Viewing network bandwidth usage with bmon
用 bmon 查看带宽使用情况
======
Introducing bmon, a monitoring and debugging tool that captures network statistics and makes them easily digestible.
Sandra Henry-Stocker
Bmon is a monitoring and debugging tool that runs in a terminal window and captures network statistics, offering options on how and how much data will be displayed and displayed in a form that is easy to understand.
To check if **bmon** is installed on your system, use the **which** command:
To check if `bmon` is installed on your system, use the `which` command:
```
$ which bmon
@ -23,7 +24,7 @@ $ which bmon
### Getting bmon
On Debian systems, use **sudo apt-get install bmon** to install the tool.
On Debian systems, use `sudo apt-get install bmon` to install the tool.
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@ -33,7 +34,7 @@ BrandPost Sponsored by HPE
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For Red Hat and related distributions, you might be able to install with **yum install bmon** or **sudo dnf install bmon**. Alternately, you may have to resort to a more complex install with commands like these that first set up the required **libconfuse** using the root account or sudo:
For Red Hat and related distributions, you might be able to install with `yum install bmon` or `sudo dnf install bmon`. Alternately, you may have to resort to a more complex install with commands like these that first set up the required `libconfuse` using the root account or sudo:
```
# wget https://github.com/martinh/libconfuse/releases/download/v3.2.2/confuse-3.2.2.zip
@ -48,11 +49,11 @@ For Red Hat and related distributions, you might be able to install with **yum i
# sudo make install
```
The first five lines will install **libconfuse** and the second five will grab and install **bmon** itself.
The first five lines will install `libconfuse` and the second five will grab and install `bmon` itself.
### Using bmon
The simplest way to start **bmon** is simply to type **bmon** on the command line. Depending on the size of the window you are using, you will be able to see and bring up a variety of data.
The simplest way to start `bmon` is simply to type `bmon` on the command line. Depending on the size of the window you are using, you will be able to see and bring up a variety of data.
The top portion of your display will display stats on your network interfaces – the loopback (lo) and network-accessible (e.g., eth0). If you terminal window has few lines, this is all you may see, and it will look something like this:
@ -100,7 +101,7 @@ qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqqqqqqqqq
1 5 10 15 20 25 30 35 40 45 50 55 60
```
Notice, however, that the graphs are not showing values. This is because it is displaying the loopback **>lo** interface. Arrow your way down to the public network interface and you will see some traffic.
Notice, however, that the graphs are not showing values. This is because it is displaying the loopback `>lo` interface. Arrow your way down to the public network interface and you will see some traffic.
```
Interfaces x RX bps pps %x TX bps pps %
@ -132,9 +133,9 @@ q Press i to enable additional information qq
Wed Oct 23 16:42:06 2019 Press ? for help
```
The change allows you to view a graph displaying network traffic. Note, however, that the default is to display bytes per second. To display bits per second instead, you would start the tool using **bmon -b**
The change allows you to view a graph displaying network traffic. Note, however, that the default is to display bytes per second. To display bits per second instead, you would start the tool using `bmon -b`
Detailed statistics on network traffic can be displayed if your window is large enough and you press **d**. An example of the stats you will see is displayed below. This display was split into left and right portions because of its width.
Detailed statistics on network traffic can be displayed if your window is large enough and you press `d`. An example of the stats you will see is displayed below. This display was split into left and right portions because of its width.
##### left side:
@ -171,7 +172,7 @@ RX TX │ RX TX │
│ No Handler 0 - │ Over Error 0 -
```
Additional information on the network interface will be displayed if you press **i**
Additional information on the network interface will be displayed if you press `i`
##### left side:
@ -189,15 +190,15 @@ Family unspec | Alias |
| Qdisc fq_codel |
```
A help menu will appear if you press **?** with brief descriptions of how to move around the screen, select data to be displayed and control the graphs.
A help menu will appear if you press `?` with brief descriptions of how to move around the screen, select data to be displayed and control the graphs.
To quit **bmon**, you would type **q** and then **y** in response to the prompt to confirm your choice to exit.
To quit `bmon`, you would type `q` and then `y` in response to the prompt to confirm your choice to exit.
Some of the important things to note are that:
* **bmon** adjusts its display to the size of the terminal window
* `bmon` adjusts its display to the size of the terminal window
* some of the choices shown at the bottom of the display will only function if the window is large enough to accomodate the data
* the display is updated every second unless you slow this down using the **-R** (e.g., **bmon -R 5)** option
* the display is updated every second unless you slow this down using the `-R` (e.g., `bmon -R 5)` option