How do I know what processes are using the network?

Use iftop to locate the TCP port on your machine that is receiving the most traffic. Then use sudo netstat -tup to locate the process owning that port.

A very simple approach then is to periodically look in /proc/<PID>/net/dev and store it with a timestamp. Here you can get total packets/bytes ...

netstat --inet -ap will show you what processes are using the internet and what host/port each process is using.

NetHogs is a text-based network traffic monitoring tool that displays bandwidth usage by each process or application running on a Linux system.

As far as I know Linux doesn't offer an alternative interface to pcap for calculating network usage. /proc/<PID>/stat(us) contains various ...

I want to monitor and log all traffic that a specific process produces. I know about tcpdump , but it seems it doesn't support filtering by process.

For example, video and audio streaming, gaming, real-time communication, IoT, and web crawling server processes are very network-intensive.

With tools like nethogs, lsof, and netstat, you can track down processes that have open connections. Processes sometimes go haywire, even with connections.

I was hoping to add a tab to resource monitor that would show the application that's using the network and how much bandwidth.

In this article, we'll discuss network usage in computer processes and learn how to diagnose as well as fix potential problems related to it.