0
I'm using Iperf3 on 2 machines and actually I'm running 2 instances of Iperf3, one to generate traffic with high priority and the other generates traffic with low priority.
I would like to generate a graph of both traffics, but the problem that I don't know when exactly the second traffic started. and Iperf3 doesn't show timestamps.
I was searching for wireshark dissector but I couldn't find something useful
I tried to run tcpdump and get results on file then open it with wireshark but it gave me un realistic results,
5Mbps instead of 35Mbps
Please help me in this issue. Thanks in advance.
Thanks Kary. but what about the rate I'm getting in IO Grah, the graph shows me that at one tick for example that the rate is 6000000 bits/sec which if we convert it to Mbps gives us about 6Mbps. while at that exact moment the rate that iperf reported was 35.6 Mbps What's the reason – Alberto – 2015-04-24T12:47:13.913
Tough to say without being able to look at the data. It's possible they use different scopes when aggregating data into averages, but 6 vs 35.6 is a big difference. I've certainly seen differences in numbers across different tools but nothing like that unless there's an error being made somewhere. I've found Wireshark and IO Graph to be reliable (when I can get it to actually show me the graphs, that is). Is it possible iperf was giving you the average tput from the beginning of the transfer up to that moment instead of the tput at that exact moment? – karyhead – 2015-04-24T16:34:15.080