I use munin super sampling to get network tx/rx per second. This works fine and it produces the following graph:
You can see the maximum value recorded is 75MBytes per second. Of course you want to know at which second the peak was recorded. But as the graph data is consolidated to 5 minutes average you can just guess.
I can click into it with cgi-graphing and look at the traffic of each second. But you can't just zoom in the biggest 5min average peak as it might not be the 1 sec peak:
Is there a way to give different graph_options on munin or rddgraph, like: do not take average on consolidating data to one data point but use the maximum value. This would make much more sense on supersampling.