trickle is clever, but when I've tried to use it for "use no more than this" bandwidth shaping (basically going for "rsync --bwlimit" but for a set of "related"

trickle is clever, but when I've tried to use it for "use no more than this" bandwidth shaping (basically going for "rsync --bwlimit" but for a set of "related" rsync processes) the arguments given had very little to do with the amount of bandwidth actually consumed. (We found another way but definitely look at tc instead.)