[Cerowrt-devel] preliminary codel and fq_codel support for cerowrt

Outback Dingo outbackdingo at gmail.com
Wed May 16 13:16:05 EDT 2012

On Wed, May 16, 2012 at 1:09 PM, dave taht <dave.taht at gmail.com> wrote:
> On 05/16/2012 09:34 AM, Sebastian Moeller wrote:
>> Hi Dave,
>> so I upgraded my router to the most recent version, and hey I am really
>> impressed, thanks a lot for all the work.
>> (I never really stress the local network, and the internet is 5/30 so I
>> consider to be on the safe side of #379 and decided to ignore your
>> recommendation about the suitability for main routers).
>>        I tried the simple_qos.sh script and for my testing it is quite
>> nice indeed. The whole network stays quite responsive even during abuse. The
>> whole expeience was quite pleasant (using ssh over a ssl based VPN to remote
>> control an X11 session while stressing in and out direction); counter to my
>> subjective experience though netalyzr was detecting 3000 odd milliseconds of
>> buffering upstream (downstream was fine). Once I find more time I will have
>> a go at reproducing that. (Now I have to figure out whether I need to
>> restart simple_qos.sh anytime I down or up an interface; any pointer?) BTW,
>> how do you envision this to be started under the AQM tab; shall this start
>> simple_qos or rather debloat?
> No, I had something more wonderful in mind.
> Felix Fietkau has added fq_codel to the openwrt 3.3 kernel and to the
> existing qos-scripts as of openwrt revision 31761.
> Builds for 37 architectures and ~150 platforms are popping out as I write.
> See
> http://buildbot.openwrt.org:8010/one_line_per_build
> For details.
> I will be obsoleting the CeroWrt aqm and aqm-scripts and simple_qos as soon
> as the new qos-scripts handles ipv6 properly, and maybe get a chance to add
> a trick or two to more to it.
> Erics latest patch to fq_codel has not yet landed in openwrt.
>> Small observation, port 81 on the router seems open to the internet,
>> easily fixed, but maybe something you might want know :)
> Patches gladly accepted. Frankly I'd hoped to have CeroWall done by now,
> but, well, the ball's on the 20 yard line, and I need to bench myself for a
> while.
> Hopefully someone else can take it in for the score.

CeroWall ?? OpenWRT iptables / qos scripts ???

>> Anyway, thanks again
>>        Sebastian
>> On May 14, 2012, at 1:59 PM, Dave Taht wrote:
>>> A test release of CeroWrt is now available that has support for Kathie
>>> Nichols' and Van Jacobson's new AQM, Codel , and Eric Dumazet's new
>>> fair queuing implementation on top of that, fq_codel.
>>> fq_codel is enabled on all interfaces by default. It is vastly simpler
>>> than what we were using before (sfqred) and draws upon and improves on
>>> the same body of ideas (head drop, fq, timestamping) but is now tied
>>> to Kathie and Van's blinding insights as to a good drop strategy, and
>>> Eric's successor-to-sfqred ideas as towards head of queue behavior,
>>> modern amounts of flows, and cache line optimizations.
>>> There is a simple_qos.sh script that can be set to your uplink and
>>> downlink speeds, but no uci interface for it as yet, nor gui. (help on
>>> finishing aqm-scripts and the luci interface gladly accepted)
>>> To see all the chocolately goodness of what fq_codel can do to wired
>>> and wireless latency, it would be good for more to play with it.
>>> Benchmarks have been very good thus far, and more benchmarks and
>>> analysis are highly desired.
>>> Caveat:
>>> This release suffers from an unrelated bug ( #379 ) and should NOT be
>>> installed as your main router. I would love to beat this bug because
>>> it's the only prio 1 remaining but thus far, no luck. Under lighter
>>> loads CeroWrt appears to work just fine, but that's for me. YMMV.
>>> Get it here: http://huchra.bufferbloat.net/~cero1/3.3/3.3.6-2/
>>> --
>>> Dave Täht
>>> SKYPE: davetaht
>>> US Tel: 1-239-829-5608
>>> http://www.bufferbloat.net
>>> _______________________________________________
>>> Cerowrt-devel mailing list
>>> Cerowrt-devel at lists.bufferbloat.net
>>> https://lists.bufferbloat.net/listinfo/cerowrt-devel
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