From: Jim Gettys <jg@freedesktop.org>
To: Rich Brown <richb.hanover@gmail.com>
Cc: bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] dslreports mockup
Date: Thu, 21 May 2015 10:26:34 -0400 [thread overview]
Message-ID: <CAGhGL2B9wHkqWzAK-H=k8TDyugDA5axiHn=wcF+CaFWntpPkQw@mail.gmail.com> (raw)
In-Reply-To: <A585C96C-0F00-450A-8D4D-4630B84A0242@gmail.com>
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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
>> > _______________________________________________
>> > Bloat mailing list
>> > Bloat@lists.bufferbloat.net
>> > https://lists.bufferbloat.net/listinfo/bloat
>>
>> _______________________________________________
>> Bloat mailing list
>> Bloat@lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/bloat
>>
>
>
>
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next prev parent reply other threads:[~2015-05-21 14:37 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-20 16:46 Dave Taht
2015-05-21 13:45 ` Rich Brown
2015-05-21 14:13 ` Jim Gettys
2015-05-21 14:24 ` Rich Brown
2015-05-21 14:26 ` Jim Gettys [this message]
2015-05-22 0:17 ` jb
2015-05-22 0:56 ` Jonathan Morton
2015-05-22 7:00 ` jb
2015-05-22 10:03 ` Sebastian Moeller
2015-05-22 12:52 ` jb
2015-05-22 17:46 ` Kevin Darbyshire-Bryant
2015-05-22 19:30 ` Sebastian Moeller
2015-05-22 19:33 ` Dave Taht
2015-05-21 21:46 ` Kevin Darbyshire-Bryant
2015-05-23 0:55 ` David Lang
2015-05-23 1:56 ` jb
2015-05-23 19:35 ` Kevin Darbyshire-Bryant
2015-05-23 21:39 ` jb
2015-05-23 21:43 ` Sebastian Moeller
2015-05-24 16:58 ` Dave Taht
2015-05-25 4:07 ` jb
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