In this article, we described three commands that can be used to monitor and check the network load in Linux. $ sar -n DEV 2 5Ĭheck the load for other protocols such as TCP. Here, -n signifies that we are calling sar for network statistics and the ‘ Protocol’ can be IP, TCP, UDP, DEV (which shows traffic for each network interface like Ethernet or Wifi), etc. The syntax to display network traffic with sar is: $ sar -n Protocol Interval Repetitions In RedHat, Fedora, and other derivatives, run: $ yum install sysstatĪfter you have installed the command, run the following to enable the command to capture statistics. To install sar command in Debian, Ubuntu or other derivatives use: $ sudo apt install sysstat Check Linux Network Resource Usage with Sar CommandĪnother command which is very handy not only for network administration but also for overall system administration is the sar command, which is used for finding any kind of resource usage. Notice that it shows the packets by each protocol ( TCP, UDP), and at the top shows the summary of connections established, closed, etc. The TCP section will also show a summary of connections and packet transfers for UDP. This is a shortened output displayed in the screenshot below. netstat gives the output in more depth, while ss gives a summary of the load. To get the network load overview, you can call both netstat and ss with the flag -s. )/Rect/Subtype/Text/T(Related Presentation Slides)/Type/Annot>endobj405 0 obj>/Subtype/Form/Type/XObject>stream Paul Syverson pointed on Tor-Talk list.)/Rect/Subtype/Text/T(Source)/Type/Annot>endobj402 0 obj>/Subtype/Form/Type/XObject>stream

Tor network statistics