It sounds like what you're looking for is in Orion NTA (NetFlow Traffic Analyzer). Here's an example of an endpoint specific search:
That still gives it to me in lumped bar graph format. I still have to guess if it was over a total 15 min or during 1 min of that 15.
That is more along the lines of what I am looking for, although this is not as nice of an example as I could provide given a more diverse bandwidth utilization.
We are an ISP and would like to do trending for bandwidth utilizations with more of a granular nature. We currently have the Netflow module, and if that is the way I can get this accomplished that would be great. But I would just like the simple bandwidth graph that would show %utilization of say a DS3 or an Metro Ethernet link in a "realtime" historical graph.
Not sure if that would be possible with what the cisco devices provide via snmp though.