Comment This is normal... (Score 1) 434
Being an experienced network engineer, I can tell you that this graph is expected.
TCP, by nature, uses all of the bandwidth it can due to its windowing mechanism. Since the FCC doesn't like carriers limiting people's use of applications like Bit Torrent, Youtube streaming, or the like, the pipe is naturally going to be full. There is nothing Comcast could do about it.
Is it overloaded? Probably not. To show a "good" looking graph, you would have to have a pipe so large as to allow every communication to finish instantaneously, or very very quickly, thus not allowing TCP to expand to the full pipe in the time allotted.
As you can see, the stream going out of Comcast is small-medium, because very few people probably host websites on the Comcast network. The transmissions are also reasonably small for requesting websites, and so, the transmissions complete quickly, thus allowing the graph to represent lower utilization.
So, in the end, this is why Comcast is pro Internet prioritization, or QoS, really.
To make something very clear, I am not affiliated with Comcast, so don't ask.