Gettys: The Blind Men and the Elephant

By corbet Jim Gettys provides
an extensive look at the FQ_CoDel queue-management algorithm
as a big
piece of the solution to bufferbloat problems. “Simple
‘request/response’ or time based protocols are preferentially scheduled
relative to bulk data transport. This means that your VOIP packets, your
TCP handshakes, cryptographic associations, your button press in your game,
your DHCP or other basic network protocols all get preferential service
without the complexity of extensive packet classification, even under very
heavy load of other ongoing flows. Your phone call can work well despite
large downloads or video use.

From: LWN