Sourabh jain <jainsourabh...@gmail.com> writes: > Hello All, > > I have a query regarding TCP upload result. I was running Flent on a > testbed of four nodes connected serially. > > n1<---->n2<---->n3<---->n4 > Flent Client: n1 > netserver: n4 > TCP used: BIC > Test length: 30 > > I ran tcp_2up test and observed that one flow starts with high throughput > and other with low (available in attachment). In my opinion, both should > start from low throughput and grow higher (because of slow start algorithm). > > I want to know that, what are the reasons behind such behavior?
Slow start is not actually very slow; it happens too fast to be visible on the graph. I'm guessing you have a very low RTT on that link? What you're seeing is that the two flows don't start at exactly the same time, so the first one manages to ramp up to the full link bandwidth before the other flow gets started; and after a short while, as the other flow gets going they start sharing. -Toke _______________________________________________ Flent-users mailing list Flent-users@flent.org http://flent.org/mailman/listinfo/flent-users_flent.org
