Hello everyone, I am aiming to generate a packet trace where I can check(print on console) the latency of each individual packet (end to end latency / src to destination latency) for a specific synthetic traffic parameter.
I believe, a basic approach will be: for an injected packet into network, accumulate the latency for each hop (router to router transmission) till it reaches destination. As the latency is in cycles: one way to implement this is via latency = Tick_packet_ejection - Tick_packet_injection. Then, we can scale this to every router, and print the result on console or in stats.txt. I did checked the codebase of garnet: specifically GarnetNetwork.py, GarnetNetwork.cc, GarnetNetwork.hh. There, I was able to locate the latency member variables like: m_packet_network_latency,m_packet_queueing_latency which are declared as Stats::Vector m_packet_network_latency. I think I will have to target them and do some calculations. I am struggling with how these variables are defined and where are they defined. Am I missing something? Can somebody give me pointers on how to make progress in getting the Packet Trace? Best, Rishabh Jain
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