Re: [RFC v2] fq_codel : interval servo on hosts

On Tue, 2012-09-04 at 18:25 +0300, Jonathan Morton wrote:

I think that in most cases, a long RTT flow and a short RTT flow on
the same interface means that the long RTT flow isn't bottlenecked
here, and therefore won't ever build up a significant queue - and that
means you would want to track over the shorter interval. Is that a
reasonable assumption?

This would be reasonable, but if we have a shorter interval, this means
we could drop packets of the long RTT flow sooner than expected.

Thats because the drop_next value is setup on the previous packet, and
not based on the 'next packet'

Re-evaluating drop_next at the right time would need more cpu cycles.