I am working on a network performance project for my Master’s thesis, and I need to measure network metrics like transfer speed and latency at intervals smaller than 1 millisecond. The current tools, such as iperf and iperf3, do not support this level of granularity as far as my knowledge goes.

Is there any other tool I can use or is it something that might only be achieved my modifying iperf3 to achieve sub-millisecond measurements.