Re: [aqm] Dummynet AQM v0.1- CoDel and FQ-CoDel for FreeBSD's ipfw/dummynet

On 2/26/16 6:17 AM, Rasool Al-Saadi wrote:
> Dear all,
> 
> I would like to announce that we (myself and Grenville Armitage) released Dummynet AQM v0.1, which is an independent implementation of CoDel and FQ-CoDel for FreeBSD's ipfw/dummynet framework, based on the IETF  CoDel [1] and FQ-CoDel [2] Internet-Drafts.
> We prepared patches for FreeBSD11-CURRENT-r295345  and FreeBSD 10.x-RELEASE (10.0, 10.1, 10.2), and a technical report  of our implementation.
> 
> Patches and documentation can be found in:
> http://caia.swin.edu.au/freebsd/aqm
> 
> Technical report:
> http://caia.swin.edu.au/reports/160226A/CAIA-TR-160226A.pdf

In browsing this it appears that shaped rates were tested only (?). I am
curious what native performance (10,100,1gbit) looked like. I think that
freebsd lacks a BQL-like mechanism to control the driver queues, and on
the other hand freebsd did not go as nuts with offloads as linux did. Is
this code generally applicable (to things like pfsense?)

Aside from that, looks pretty good. I am curious also as to what caused
the offset difference in sawtooth pattern between linux and bsd
implementations (like in fig 2) Different initcwnd? ssthresh? don't seem
to be it -  linux reno vs bsd reno?

> 
> 
> 
> [1] "Controlled Delay Active Queue Management",  https://tools.ietf.org/html/draft-ietf-aqm-codel-02
> [2] "FlowQueue-Codel" , https://tools.ietf.org/html/draft-ietf-aqm-fq-codel-04
> 
> Regards,
> Rasool Al-Saadi
> 
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