[Codel] some backing scripts from Multimedia-unfriendly TCP Congestion Control and Home Gateway Queue Managemen

[Dave Taht]

---------- Forwarded message ----------
From: Andreas Petlund <apetlund at simula.no>
Date: Tue, Apr 24, 2012 at 11:57 PM
Subject: Re: Bufferbloat experiment preliminary result
To: David Täht <dave.taht at gmail.com>


Hi Dave,

 The key ns2 scripts and analysis tools that was
used in "Multimedia-unfriendly TCP Congestion Control and Home Gateway
Queue Management" can be found here:
http://caia.swin.edu.au/urp/newtcp/tools/cbr-drop-scripts.tar.gz

To successfully run this simulation, ns2 needs to be patched with the
CAIA CBR traffic extension found here:
http://caia.swin.edu.au/urp/newtcp/tools/ns2_33_patch0.1.1.tar.gz

I hope this will aid you in your work. Also hope to speak to you soon.


Cheers,
Andreas


On 11/02/2011 07:46 PM, David Täht wrote:
> On 11/01/2011 03:03 PM, Andreas Petlund wrote:
>> On 10/31/2011 08:52 PM, Dave Taht wrote:
>>> Working backwards...
>>>
>>> 1) where is "there"? I'm in paris, don't have much budget left for
>>> travel this year.
>>>
>> With the new kid in town, I'll not be travelling much the first couple
>> of months, but the next IETF meeting is in Paris, I believe. That may be
>> a golden opportunity. I'm also available on Skype (andreas_petlund).
>
> Taipai (can't spell it) November 15th. Paris would be a bit of a detour!
>
> am davetaht on skype but rarely am on - too many distractions.
>
> Perhaps as we pull a plan togther, post baby, we can do a couple
> concalls.
>
>>
>>> 2) Do you mind if I put these scripts in a public place (github?) I am
>>> slowly assembling bits from the 4+ experiements I want to run and
>>> re-run and re-run....
>>>
>> I have sent an email to the other authors (the Swinburn people). If they
>> agree (which I do believe they will), I'll give you green light for
>> making it public.
> OK. I also have a bittorrent and tcp-lp simulation to play with. I'd
> like to get a decent red and qfq sim up and then hook it all up
> together. Might be able to steal some time and vms from sandia.
>>> 3) Which paper was this relevant to? The media-unfriendly one?
>>>
>> Correct.
>>
>>> 4) I think your work is spot-on-relevant, too, which is why we're
>>> talking. :) In my case, I tumbled into this by accident - I was
>>> working on mesh networks in Nicaragua... and upgraded everything from
>>> 'g' to 'n' and thought it would be 'better'. It wasn't....
>>>
>> We started out with the Norwegian MMORPG game company Funcom and some
>> traces that showed some extremely high application-layer latency.
>
> While it certainly exists there, it starts at the edge and works in...
>
> It bothers me most that nobody grokked that while tcp scales well to
> lunar orbit, at such high levels of buffering it is very human
> unfriendly. 100 vs 1000 buffers is quadratic in terms of human
> friendlyness of tcp... 10,000 worse, not 1000 times...
>
> I need a new word to use instead of 'fair' or 'unfair' when it comes
> to queuing - 'friendly queuing' is working for me...
>> I've
>> mostly been working with end-to-end transport, but have been looking
>> into buffers recently. A lot of scenarios to explore where things that
>> is seemingly benign really is not.
>
> Want a brain dump from van? I have been reading his mid-late 80s stuff
> over and over and it wasn't until I got it straight from the source
> before I truly got it - and even then i only get 85% of it, and
> getting 86% would probably take 10 years of study and and a partial
> brain transplant.
>
>> Cheers,
>> Andreas
>
>



-- 
Dave Täht
SKYPE: davetaht
US Tel: 1-239-829-5608
http://www.bufferbloat.net