First of all, I found a similar question but it doesn't really solve my problem. I am trying to discover if the USB bus for a device I am using is the bottleneck in my program.
How can I monitor a USB bus (similar to how gnome-system-monitor works) to show bus utilization? Basically I want to identify when the bus is being 'maxed' out. I guess what I am looking for is some interface for usbmon, as that appears like it would do what I need.
This came about from testing the USRP and GNU Radio. I am running into a situation where it appears that the USB bus could be a limiting factor, so I ask the more general question of USB performance monitoring.