[Bloat] I feel an urge to update this

Michael Welzl michawe at ifi.uio.no
Sat Sep 20 12:47:13 EDT 2014


fwiw:  http://tools.ietf.org/id/draft-sallantin-iccrg-initial-spreading-01.txt

Sent from my iPhone

> On 20. sep. 2014, at 17:55, Jonathan Morton <chromatix99 at gmail.com> wrote:
> 
> 
>> On 20 Sep, 2014, at 12:03 pm, Steinar H. Gunderson wrote:
>> 
>>> On Sat, Sep 20, 2014 at 02:33:06AM +0300, Dave Taht wrote:
>>> http://tools.ietf.org/html/draft-gettys-iw10-considered-harmful-00
>> 
>> The pedant in me wants to point out that 4 -> 10 is not “2.5 times worse”,
>> but “2.5 times as bad” or “1.5 times worse” (just as 4 -> 5 is “20% worse”,
>> “0.2 times worse” or “1.2 times as bad”).
> 
> ISTR seeing some concrete test data showing that IW10 doesn't even work as designed, unless TCP pacing of some type is used to spread out the burst.  That's *despite* bloated buffers.  Really puts the nail in the coffin, if you ask me.
> 
> The recent work on SQM could be added to the list of mitigation measures.  Also, by keeping inter-flow latency low, it greatly reduces the original motivation for IW10 in the first place.
> 
> - Jonathan Morton
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