How to check the network speed and traffic usage occupied by a process in Linux

There are three commands vnstat, iftop and nethogs (recommended)

all require additional installation of software using yum or apt-get

1. Use vnstat and view the interface Statistical report

vnstat -i eth0 -l #实时流量情况

There are other commands to use --help to view

After ctrl c ends, the traffic statistics results during the monitoring period will be displayed

2. Use iftop to check bandwidth usage

iftop can be used to monitor the real-time traffic of the network card (you can specify the network segment), reversely analyze IP, and display port information Wait

Command usage:

• -iSet the monitored network card, such as: # iftop -i eth2

• -B Display traffic in bytes (default is bits), such as: # iftop -B

• -n makes the host information directly display the IP by default, such as: # iftop -n

• -N makes the port information directly display the port number by default, For example: # iftop -N

Omit other... #Press n to switch to display the IP or host name of this machine;

Press s to switch whether to display the host information of this machine;

• Press d Switch whether to display the host information of the remote target host;

• Press t to switch the display format to 2 lines/1 line/only send traffic/only receive traffic;

• Press N to switch to displaying the port number or port service name;

• Press S to switch whether to display the port information of the machine;

• Press D to switch whether to display the port information of the remote target host;

• Press p to switch whether to display the port information;

• Omit others …… Bandwidth utilization (recommended)

• Command usage:

1. Set refresh every 5 seconds. Use -d to specify the refresh frequency: nethogs -d 5

• 2. Monitor eth0 network bandwidth: nethogs eth0

3. Monitor eth0 and eth2 interfaces at the same time: nethogs eth0 eth2

Interactive command:

The following are some interactive commands (keyboard shortcuts) of NetHogs

m : Modify units

r

: Sort by traffic

s

: Sort by send traffic

• q : Exit the command prompt

• Use screenshot:

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