Re: [Bloat] dslreports mockup

[Jim Gettys <jg@freedesktop.org>]

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On Thu, May 21, 2015 at 10:24 AM, Rich Brown <richb.hanover@gmail.com>
wrote:

> Ahah! I wasn't clear. I do want One Grade to Rule Them All...
>
> But I was only talking about different Y-axis values on the latency
> charts, so that a bad latency in one direction doesn't hide the details of
> the transfer in the other.
>
>
​Ah, yes.  That makes sense.
                     - Jim
​


> Rich
>
> On May 21, 2015, at 10:13 AM, Jim Gettys <jg@freedesktop.org> wrote:
>
> Providing separate grades for upload and download does not make sense to
> me, as interference with acks in the other direction badly hurts that
> traffic. Uploads and downloads are *not* independent variables.
>
> KISS: one grade....
>                   - Jim
>
>
> On Thu, May 21, 2015 at 9:45 AM, Rich Brown <richb.hanover@gmail.com>
> wrote:
>
>> That is interesting. I'm trying to think how the latency charts could be
>> misconstrued, since a Y-axis on the right isn't the norm - I don't think
>> it's hard to understand, but just different.
>>
>> The display as-is clearly shows that the download is badly bloated, but
>> the upload is fine. That's the important message for most people at home.
>> But as a researcher, you want to understand the details of the upload. So
>> having different scales would help you see better into the problem.
>>
>> * If the download and upload values are substantially similar, the left
>> and right Y-axis scales should be the same, so there wouldn't be confusion
>>
>> * If the values are substantially different (as in this screen shot), the
>> pink and yellow backgrounds (on the left) and the lack of them on the right
>> would provide a solid cue that there is something different going on
>> between the two charts.
>>
>> * On the other hand, the report already shows different Y-axis values for
>> the down/upload speeds, so the latency charts could mimic the speeds...
>>
>> Other thoughts?
>>
>> Rich
>>
>> On May 20, 2015, at 12:46 PM, Dave Taht <dave.taht@gmail.com> wrote:
>>
>> > I wanted to be able to have separated charts for up and down on
>> > different scales, so I took apart what exists today in gimp and got
>> > this:
>> >
>> > http://snapon.lab.bufferbloat.net/~d/dslreportsmockup.png
>> >
>> > I guess it is partially because I am getting a C on the download at
>> > this speed, and no A+ on the upload, and I would at least like to get
>> > a gold star from teacher for effort. :/
>> >
>> > I dunno how to fix the download short of getting rid of several
>> > seconds of inherent buffering in their CMTS. There must be a simple
>> > way to do that??
>> >
>> > --
>> > Dave Täht
>> > Open Networking needs **Open Source Hardware**
>> >
>> > https://plus.google.com/u/0/+EricRaymond/posts/JqxCe2pFr67
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