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Anyone knows how can i get CPU and Memory usage by a network interface (WiFi or Ethernet) in specific packet interval of a Wireshark Capture?
Wireshark captures packets; it doesn't measure CPU or memory usage of any sort on the host.
I tried use TOP command over the Network-Manager process in millisecond interval, but the values didn't appear to be good, and I'm not sure either if these is the correct way to make this.
It's not. If you're referring to NetworkManager on Linux, it manages the configuration of network interfaces, but it's not involved in the processing of packets.
I'm not sure there's any tool that can do a measurement of the CPU or memory use by a particular network interface, either at the driver level or at the level of the entire networking stack, especially over such a short period of time.
