> The high latency with dsl usually comes hand in hand with interleaving enabled.
Interleaving doesn't add huge amounts of latency. To the LNS with the ISP I'm on, I usually see about 11-16ms to the first hop, maybe 5ms to a game server on their network a most. Without interleaving, I see about 5-7ms less on a good day.
Now, saying that, there are different levels of interleaving that can be applied on modern DSLAMs, but we're not really talking tens of milliseconds here.
It's also worth keeping in mind that your pings won't be truly representative of latency. Plenty of ISPs de-prioritise ICMP traffic.
My pings are really similar to my latency measured with different sources.
My isp (Qwest) uses interleaving and it adds quite a bit to my first hop (it usually is about 60ms) and from what I've seen those people actually living in a more populated area the interleaving latency added is about the same (>30ms first hop and usually closer to 60). So of course it depends on the ISP and qwest is notoriously bad for this but is my only option, and occurs with plenty of other ISPs with interleaving.
--- google.com ping statistics --- 26 packets transmitted, 26 packets received, 0.0% packet loss round-trip min/avg/max/stddev = 9.077/15.996/34.578/7.464 ms