On 21 May 2015, at 15:23, 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

As a dumb user I agree with the one overall grade result. As a slightly less dumb user seeing up & down graphs is useful for tuning bandwidth limits, or I found it so at least. It's suddenly struck me as odd that a test section & graph for simultaneous up & down streams isn't included, presumably it would also be the basis for the one grade overall badge result. I guess that's feedback to dslreports if they're not already listening here.

Agree with Rich's comments re: background colours following scaling as a further pointer to bad/better/good on up/down latency differences.

Kevin

PS: As an aside I don't know if my comments/thoughts are helpful on this list or not.  I know there are a lot of extremely experienced & clever people here who've been battling this problem for a long time and I fear 'stupid' questions will just try people's patience.  If my dumb user observations aren't helpful please tell me to shut up!


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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