Check the total NIC traffic

install tool nload

  1. [root@liqiang.io]# yum install -y epel-release
  2. [root@liqiang.io]# yum install -y nload

View NIC traffic

  1. [root@liqiang.io]# nload wlp3s0
Figure 1: nload screenshot

View specific process traffic

installation tool nethogs

  1. [root@liqiang.io]# yum install -y epel-release
  2. [root@liqiang.io]# yum install -y nethogs

View process traffic

Figure 2: nethogs screenshot

Ref