[Bloat] benefits of ack filtering

[Dave Taht]

Recently Ryan Mounce added ack filtering cabilities to the cake qdisc.

The benefits were pretty impressive at a 50x1 Down/Up ratio:

http://blog.cerowrt.org/post/ack_filtering/

And quite noticeable at 16x1 ratios as well.

I'd rather like to have a compelling list of reasons why not to do
this! And ways to do it better, if not. The relevant code is hovering
at:

https://github.com/dtaht/sch_cake/blob/cobalt/sch_cake.c#L902

-- 

Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619