The tools listed below are all open source and can help you to answer questions such as “ why is the network so slow today?”. If you are looking to manage, troubleshoot or debug your Network, then read our article – 22 Linux Networking Commands for Sysadmins In this article, we will review 17 useful bandwidth monitoring tools to analyze network usage on a Linux system. Read Also: 20 Command Line Tools to Monitor Linux Performance Because top shows per CPU thread usage.Are you having problems monitoring your Linux network bandwidth usage? Do you need help? It’s important that you are able to visualize what is happening in your network in order to understand and resolve whatever is causing network slowness or simply to keep an eye on your network. If top percentage showed the per core usage, the value must have been 50% but it's not. Only CPU thread 3 out of 48 CPUs is using 100% CPU: Then in the same terminal of top, I pressed 1 to see the per CPU usage.On a separate thread, I ran top and verified bash is using around 100% cpu:.$ while true do x='reee' x='asdasd' z='asdasdasd ' done I did the following steps to verify the above answer:

Each different item in every column has an unique ID # The following is the parsable format, which can be fed to other Running lscpu -p provide a decent print of the cores and CPUs: $ lscpu -p

For example, on a server with 24 cores and 2 threads per core (total of 48 CPUs), the usage could go up to 4800. If hyper threading is enabled, the CPU usage shown in top is the usage per CPU, not core.

Ubuntu check resource usage