[Starlink] [Rpm] the grinch meets cloudflare's christmas present

Sebastian Moeller moeller0 at gmx.de
Thu Jan 5 06:25:47 EST 2023 

Hi RR,


> On Jan 5, 2023, at 04:11, Dick Roy via Starlink <starlink at lists.bufferbloat.net> wrote:
> 
>  
>  
> From: Starlink [mailto:starlink-bounces at lists.bufferbloat.net] On Behalf Of Dave Collier-Brown via Starlink
> Sent: Wednesday, January 4, 2023 6:48 PM
> To: starlink at lists.bufferbloat.net
> Subject: Re: [Starlink] [Rpm] the grinch meets cloudflare's christmas present
>  
> I think using "speed" for "the inverse of delay" is pretty normal English, if technically erroneous when speaking nerd or physicist.
> 
> [RR] I’ve not heard of that usage before.  The units aren’t commensurate either. 
> 
> Using it for volume? Arguably more like fraudulent...
> 
> [RR] I don’t think that was Bob’s intent.  I think “load volume” was meant to be a metaphor for “number of bits/bytes” being transported (“by the semi”).  
> 
> That said, aren’t users these days educated on “gigs” which they intuitively understand to be Gigabits per second (or Gbps)?  Oddly enough, that is an expression of “data/information/communication rate” in the appropriate units with the nominal technically correct meaning.  

	[SM] Gigs would have the following confounds if used without a proper definition:
a) base10 or base2^10?
b) giga-what? Bit or Byte
c) Volume or capacity
d) if capacity, minimal, average, or maximal?

I note (again, sorry to sound like a broken record) that the national regulatory agency for networks (Bundes-Netzagentur, short BNetzA) in Germany has some detailed instructions about what information ISPs need to supply to their potential customers pre-sale (see https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Anbieterpflichten/Kundenschutz/Transparenzmaßnahmen/Instruction_for_drawing_up_PIS.pdf?__blob=publicationFile&v=1) where the headlines talk correctly about "data transmission rates" but in the text they occasionally fall back to "speed". They also state: "Data transmission rates must be given in megabits per second (Mbit/s)."
This is both in response to our "speed" discussion, but also one potential way to clarify b) c) and d) above... given that is official this probably also answers a) (base10 otherwise the text would be "Data transmission rates must be given in mebibits per second (Mibit/s).")

--Sebastian

> 
> RR
> 
> --dave
> 
> On 1/4/23 18:54, Bruce Perens via Starlink wrote:
>> On the other hand, we would like to be comprehensible to normal users, especially when we want them to press their providers to deal with bufferbloat. Differences like speed and rate would go right over their heads.
>>  
>> On Wed, Jan 4, 2023 at 1:16 PM Ulrich Speidel via Starlink <starlink at lists.bufferbloat.net> wrote:
>>> The use of the term "speed" in communications used to be restricted to the speed of light (or whatever propagation speed one happened to be dealing with. Everything else was a "rate". Maybe I'm old-fashioned but I think talking about "speed tests" muddies the waters rather a lot.
>>>  
>>> -- 
>>> **************************************************************** 
>>> Dr. Ulrich Speidel 
>>> 
>>> Department of Computer Science 
>>> 
>>> Room 303S.594
>>> Ph: (+64-9)-373-7599 ext. 85282 
>>> 
>>> The University of Auckland 
>>> u.speidel at auckland.ac.nz
>>> http://www.cs.auckland.ac.nz/~ulrich/
>>> **************************************************************** 
>>> From: Starlink <starlink-bounces at lists.bufferbloat.net> on behalf of rjmcmahon via Starlink <starlink at lists.bufferbloat.net>
>>> Sent: Thursday, January 5, 2023 9:02 AM
>>> To: jf at jonathanfoulkes.com <jf at jonathanfoulkes.com>
>>> Cc: Cake List <cake at lists.bufferbloat.net>; IETF IPPM WG <ippm at ietf.org>; libreqos <libreqos at lists.bufferbloat.net>; Dave Taht via Starlink <starlink at lists.bufferbloat.net>; Rpm <rpm at lists.bufferbloat.net>; bloat <bloat at lists.bufferbloat.net>
>>> Subject: Re: [Starlink] [Rpm] the grinch meets cloudflare's christmas present
>>>  
>>> Curious to why people keep calling capacity tests speed tests? A semi at 
>>> 55 mph isn't faster than a porsche at 141 mph because its load volume is 
>>> larger.
>>> 
>>> Bob
>>> > HNY Dave and all the rest,
>>> > 
>>> > Great to see yet another capacity test add latency metrics to the
>>> > results. This one looks like a good start.
>>> > 
>>> > Results from my Windstream DOCSIS 3.1 line (3.1 on download only, up
>>> > is 3.0) Gigabit down / 35Mbps up provisioning. Using an IQrouter Pro
>>> > (an i5 x86) with Cake set for 710/31 as this ISP can’t deliver
>>> > reliable low-latency unless you shave a good bit off the targets. My
>>> > local loop is pretty congested.
>>> > 
>>> > Here’s the latest Cloudflare test:
>>> > 
>>> > 
>>> > 
>>> > 
>>> > And an Ookla test run just afterward:
>>> > 
>>> > 
>>> > 
>>> > 
>>> > They are definitely both in the ballpark and correspond to other tests
>>> > run from the router itself or my (wired) MacBook Pro.
>>> > 
>>> > Cheers,
>>> > 
>>> > Jonathan
>>> > 
>>> > 
>>> >> On Jan 4, 2023, at 12:26 PM, Dave Taht via Rpm 
>>> >> <rpm at lists.bufferbloat.net> wrote:
>>> >> 
>>> >> Please try the new, the shiny, the really wonderful test here:
>>> >> https://speed.cloudflare.com/
>>> >> 
>>> >> I would really appreciate some independent verification of
>>> >> measurements using this tool. In my brief experiments it appears - as
>>> >> all the commercial tools to date - to dramatically understate the
>>> >> bufferbloat, on my LTE, (and my starlink terminal is out being
>>> >> hacked^H^H^H^H^H^Hworked on, so I can't measure that)
>>> >> 
>>> >> My test of their test reports 223ms 5G latency under load , where
>>> >> flent reports over 2seconds. See comparison attached.
>>> >> 
>>> >> My guess is that this otherwise lovely new tool, like too many,
>>> >> doesn't run for long enough. Admittedly, most web objects (their
>>> >> target market) are small, and so long as they remain small and not
>>> >> heavily pipelined this test is a very good start... but I'm pretty
>>> >> sure cloudflare is used for bigger uploads and downloads than that.
>>> >> There's no way to change the test to run longer either.
>>> >> 
>>> >> I'd love to get some results from other networks (compared as usual to
>>> >> flent), especially ones with cake on it. I'd love to know if they
>>> >> measured more minimum rtts that can be obtained with fq_codel or cake,
>>> >> correctly.
>>> >> 
>>> >> Love Always,
>>> >> The Grinch
>>> >> 
>>> >> --
>>> >> This song goes out to all the folk that thought Stadia would work:
>>> >> https://www.linkedin.com/posts/dtaht_the-mushroom-song-activity-6981366665607352320-FXtz
>>> >> Dave Täht CEO, TekLibre, LLC
>>> >> <image.png><tcp_nup-2023-01-04T090937.211620.LTE.flent.gz>_______________________________________________
>>> >> Rpm mailing list
>>> >> Rpm at lists.bufferbloat.net
>>> >> https://lists.bufferbloat.net/listinfo/rpm
>>> > 
>>> > 
>>> > _______________________________________________
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>>> > Rpm at lists.bufferbloat.net
>>> > https://lists.bufferbloat.net/listinfo/rpm
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>> 
>>  
>> -- 
>> Bruce Perens K6BP
>> 
>> 
>> 
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> -- 
> David Collier-Brown,         | Always do right. This will gratify
> System Programmer and Author | some people and astonish the rest
> dave.collier-brown at indexexchange.com |              -- Mark Twain
>  
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