Does anybody know what's the exact unit of the Y-axis in the Throughput Graph ? It shows [B/s] but is it bits or Bytes per second? Thx. asked 15 May '14, 05:40  profke |
2 Answers:
I think by convention, capital B refers to bytes and lowercase b refers to bits. answered 15 May '14, 06:00  smp edited 15 May '14, 06:01 |
Follow the steps in this answer so that your I/O Graph and TCP Stream Throughput Graph are graphing the same things. Also change the tick interval on the I/O graph to match the Throughput graph as closely as possible. The I/O graph averages the throughput over the tick interval. The Throughput graph uses a 20-segment moving average. Because the time periods are calculated differently, you will probably never get exactly the same results from both graphs, but they should be close. answered 17 May '14, 16:27  Jim Aragon Thanks Jim, I will check this out. (22 May '14, 02:01) profke |
Well, that should be the case, but I want to be sure.
If you want to be sure, than plot an IO graph, set it to Bytes per second, and then to bits per second, and see which corresponds to the Throughput graph. Note that the Throughput graph shows one stream in one direction, based on the selected packet, whereas the IO graph shows all packet in the trace file, so you will have to apply a display filter so that the IO graph is graphing the same packets as the Throughput graph.
Well, I have done this before but I don't find a relation between these two type of graphs; in the IO Graph I have an example that shows a peak up to 2Mbyte/s , while on the TCP Troughput graph it peaks to 54MB/s; for whatever the "B" stands for; it doesn't match with the 2MB/s (=16Mb/s) on the IO graph. Hence my question how to interprete the TCP Troughput graph. I think both graphs plot the data on a different way. I've some screenshots to show, but I don't know how to get these into this box.