On Thu, 15 May 2014 16:32:55 -0400, dpreed@reed.com said:

> And in the end of the day, the problem is congestion, which is very
> non-linear.  There is almost no congestion at almost all places in the Internet
> at any particular time.  You can't fix congestion locally - you have to slow
> down the sources across all of the edge of the Internet, quickly.

There's a second very important point that somebody mentioned on the NANOG
list a while ago:

If the local router/net/link/whatever isn't congested, QoS cannot do anything
to improve life for anybody.

If there *is* congestion, QoS can only improve your service to the normal
uncongested state - and it can *only do so by making somebody else's experience
suck more*....