I have been seeing these questions quite a bit i.e.
"I have a gigabit link and then I ran an Iperf test are my results normal?"
"My 100mpbs interface is only sending 30mbps of traffice, is this normal?"
I do not think that these are appropriate questions for the stack exchange. Furthermore, the ANSWERS are usually given by people that are probably unquallified to give experienced opinions on network normalcy. Also, every time a question is asked about an Iperf test, the initial Iperf test is fudged because the OP used the wrong options and/or doesn't understand what they mean.
I would like to label this entire category of questions as off-topic.