On Wed, Feb 3, 2016 at 3:09 PM, Rick Jones <rick.jones2@hpe.com> wrote:

On 02/03/2016 11:22 AM, John Klimek wrote:

I'm currently using pfaense which only supports codel and not
fq_codel. Is there a big difference between them? Is it worth
looking into using a different router?

My simplistic understanding is fq_codel creates several/many different queues, spreading flows across those queues and applying codel on each queue.

http://man7.org/linux/man-pages/man8/tc-fq_codel.8.html

http://man7.org/linux/man-pages/man8/tc-codel.8.html

It also preferentially schedules "new" queues, relative to queues that have a standing queue. So short transactions such as dchp, ra, short RPC transactions, VOIP, etc fly through the router relative to bulk TCP flows.

This algorithm does really wonderful things for any flow that is a "good citizen" by pacing their traffic at their share of available bandwidth, rather than bursting their traffic. For the first time, there is incentive to be a "good citizen" in your behavior.

rick jones

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