I remember fiddling around with this a few years back, I even made my own shaping script somewhat based on wondershaper (http://www.carlos-rodrigues.com/files/u

I remember fiddling around with this a few years back, I even made my own shaping script somewhat based on wondershaper (http://www.carlos-rodrigues.com/files/unmaintained/ctshaper/ http://www.carlos-rodrigues.com/files/unmaintained/ctshaper/ - which probabyl still works). At the time I could get a huge improvement in interactive response and concurrency on my 512Kbps/128Kbps DSL connection. Without it it was impossible for be to be playing some online game while another computer in the house was downloading something. The benefits diminish as bandwidth increases, as concurrency gets much better without any measures. So, the black art of traffic shaping becomes much more difficult.