[Bloat] Notes about hacking on AQMs

Eric Dumazet eric.dumazet at gmail.com
Wed Jun 8 08:56:13 EDT 2011

Le mercredi 08 juin 2011 à 06:12 -0600, Dave Taht a écrit :

> SFQ is the second most commonly used qdisc, but doesn't balance in
> ways ESFQ could.
> ESFQ really looked like a winner and I'm sorry it never made the
> mainline kernel.

Hmm, since 2007 SFQ has all ESFQ provided, if you use a flow classifier,
you can exactly match your needs.

[ SFQ uses an internal flow classifer on
src,dst,proto,proto-src,proto-dst ]

Say you want to make something only about dst addresses :

tc filter add ... flow hash \
  	keys dst divisor 1024

With recent SFQ, you can play with a divisor in [256 .. 65536]

Refs : 



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