[Bloat] extremely good dslreports result for bufferbloat on free.fr

[Dave Taht]

This got an A+ rating, which I would not have given it, given the
enormous load spike.

http://www.dslreports.com/speedtest/400387

Imagine if your steering wheel behaved like this.

On Thu, Apr 30, 2015 at 8:10 PM, jb <justin at dslr.net> wrote:
> Already users are like "how can i fix this!".

The FAQ can be improved.

> I've just replied to one who has lower speeds on the surfboard SB6141 which
> is a modem designed for crazy cable speeds. He has an "F" and his downstream
> bloat is terrible, and upstream not much better.
>
> I imagine a LOT of people on slower plans have a "recommended" modem like
> this one.

I have not found a cable modem with less than 250ms bloat at 50mbit/5.
The docsis 3 ones
are often in the 800 ms range.

>
> However most of them will hear that the problems from bloat only happen when
> you reach maximum upload or download speed and will think, well, I can live
> with that, I never run my connection to capacity and I don't upload to
> offsite backups..

Latency spikes are annoying no matter how they are inflicted, and happen
all the time on nearly any workload. Your test is testing tcp in steady state,
most web transactions are bursts of dozens to a hundred flows in slow
start.

It is the business class customers that feel it most often. I have never
visited a business class cable customer that had reasonable amounts of delay
and jitter during business hours.

After living in  bloat-free universe for quite some time now, annoying
issues with things like netflix are decreased, voip and videoconferencing
work all the time, same for games...

it would be hard to create a metric
for user satisfaction, but every before/after comparison someone
implementing a solution is quite overjoyed.

https://twitter.com/mnot/status/575581792650018816

>
> On Fri, May 1, 2015 at 10:48 AM, Rich Brown <richb.hanover at gmail.com> wrote:
>>
>>
>> > On Wed, Apr 29, 2015 at 9:33 PM, jb <justin at dslr.net> wrote:
>> > ...
>> >> if it did get a rating it would be an "D" or "F"..
>> >
>> > How about "E" for error? That can be further explained in the text
>> > "Sometimes the bloat is so bad that we cannot adaquately test for it -
>> > and other times there is something else badly wrong with the link that
>> > we cannot identify."
>>
>> I would stay away from a letter grade for that state, since it could
>> appear to be on the continuum of A+, A, B, C, D, E (?) F...
>>
>> Better to give it a "-" or "?" mark. And if they hover over the "?", let
>> the text show: "Sometimes the bloat is so bad that we cannot adaquately test
>> for it - and other times there is something else badly wrong with the link
>> that we cannot identify."
>>
>> Rich
>
>



-- 
Dave Täht
Open Networking needs **Open Source Hardware**

https://plus.google.com/u/0/+EricRaymond/posts/JqxCe2pFr67