wrote: >=20 >> Doc Searls = (http://blogs.law.harvard.edu/doc/2014/07/20/the-cliff-peronal-clouds-need= -to-climb/) mentioned in passing that he uses a new speed test website. = I checked it out, and it was very cool=85 >>=20 >> www.speedof.me is an all-HTML5 website that seems to make accurate = measurements of the up and download speeds of your internet connection. = It=92s also very attractive, and the real-time plots of the speed show = interesting info. (screen shot at: http://richb-hanover.com/speedof-me/) >>=20 >> Now if we could get them to a) allow longer/bigger tests to = circumvent PowerBoost, and b) include a latency measurement so people = could point out their bufferbloated equipment.=20 >>=20 >> I'm going to send them a note. Anything else I should add? >>=20 >> Rich >> _______________________________________________ >> Bloat mailing list >> Bloat@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/bloat >=20 --Apple-Mail=_88978180-1720-4ACA-B6FF-A32B7B1427AF Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 Neil,

Thanks for the note and the = observations. My thoughts:

1) I note that speedof.me does seem to overstate the = speed results. At my home, it reports 5.98mbps down, and 638kbps up, = while betterspeedtest.sh shows 5.49/0.61 mbps. (speedtest.net gives numbers similar to = the betterspeedtest.net = script.)

2) I think we're in agreement about = the peak upload rate that you point out is too high. Their measurement = code runs in the browser. It seems likely that the browser pumps out a = few big packets before getting flow control information, thus giving the = impression that they can send at a higher rate. This comports with the = obvious decay that ramps toward the long-term = rate.

3) But that long-term speed should = be at or below the theoretical long-term rate, not above = it.

Two experiments for you to = try:

a) What does betterspeedtest.sh show? = (It's in the latest CeroWrt, in /usr/lib/CeroWrtScripts, or get it from = github: https://github.co= m/richb-hanover/CeroWrtScripts )

b) = What does www.speedtest.net = show?

I will add your question (about the = inaccuracy) to the note that I want to send out to speedof.me this weekend. I will also ask = that they include min/max latency measurements to their test, and an = option to send for > 10 seconds to minimize any effect of = PowerBoost...

Best = regards,

Rich

On Jul 25, 2014, at 5:10 AM, Neil Davies <neil.davies@pnsol.com> = wrote:

Rich

You may want to check how = accurate they are to start.

I just ran a =93speed= test=94 on my line (which I have complete control and visibility over = the various network elements) and it reports an average =93speed=94 (in = the up direction) that is in excess of the capacity of the line, it = reports the maximum rate at nearly twice the best possible rate of the = ADSL connection.

Doesn=92t matter how pretty it = is, if its not accurate it is of no use. This is rather ironic as the = web site claims it is the =93smartest and most = accurate=94!

Neil

= <speedof_me_14-07-25.png>

PS = pretty clear to me what mistake they=92ve made in the measurement = process - its to do with incorrect inference and hence missing the = buffering effects.

On 20 Jul 2014, at = 14:19, Rich Brown <richb.hanover@gmail.com> = wrote:

Doc Searls (http://blogs.law.harvard.edu/doc/2014/07/20/the-cliff-p= eronal-clouds-need-to-climb/) mentioned in passing that he uses a = new speed test website. I checked it out, and it was very = cool=85

www.speedof.me is = an all-HTML5 website that seems to make accurate measurements of the up = and download speeds of your internet connection. It=92s also very = attractive, and the real-time plots of the speed show interesting info. = (screen shot at: http://richb-hanover.com/spe= edof-me/)

Now if we could get them to a) allow longer/bigger = tests to circumvent PowerBoost, and b) include a latency measurement so = people could point out their bufferbloated equipment.

I'm going = to send them a note. Anything else I should = add?

Rich
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