Using procexp 1.1 on Fedora 17
Network graphs do always display the upload/download rate relative to the absolute limit. This is bad since
1. there may be no absolute limit for this network interface. This is the case for the loopback interface
2. the absolute limit may be inaccurate or incorrect. In my case procexp assumes that my em1 interface supports 100Mb/s but it does support 1000Mb/s according to the output of "ethtool em1"
3. the network topology is unknown so even if ethtool reports a limit, the network may be limited to much lower bitrates.
I suggest procexp uses the highest effective bitrate to scale the network graphs.