Re: [Bloat] goresponsiveness learned a few tricks...

[Sebastian Moeller <moeller0@gmx.de>]

Hi David,


> On Jan 9, 2024, at 00:15, David Schinazi <dschinazi.ietf@gmail.com> wrote:
> 
> My understanding is that Apple chose to report RTT as an inverse because people are used to "higher number means better". The target audience for network speed tests is the average slightly-tech-savvy consumer, and those aren't all familiar with what latency means. Also, car enthusiasts like RPMs :-)

	Yes, I understand the rationale, I am just not buying it 100%. As I said people are well accustomed to values were "less is more" (prices, taxes, marathon times, ...) and I am not sure whether catering to the lowest common denominator is all that superior to teaching folks the relevant numbers... After all the trade-off is that now if people want to decompose or aggregate RPM values they need to deal with fractions... However for the responsiveness draft I fully accept that ship has sailed and "bigger is better" it is ;)


Regards
	Sebastian


> David
> 
> On Mon, Jan 8, 2024 at 1:53 PM Sebastian Moeller via Bloat <bloat@lists.bufferbloat.net> wrote:
> Hi Julien,
> 
> On 8 January 2024 22:04:23 CET, Juliusz Chroboczek <jch@irif.fr> wrote:
> >> (h++ps://github.com/network-quality/draft-ietf-ippm-responsiveness).
> >
> >There's quite a few good ideas in this draft, but the one that I find
> >intriguing is reporting RTT values in RPM (units of 1/60 Hz) rather than
> >milliseconds.
> 
> That idea, reporting the reciprocal has been around for some time, I think I first heard it from Jonathan Morton. But this is the first implementation....
> 
> Now personally I tend to think about 'latency' as sort of a budget, and then accounting where this budget is spent is easier with durations than periods. But I understand the attraction of 'bigger is better' numbers as well. Though most people also know smaller is better number, like product prices or taxes owed, but I digress.
> 
> 
> >
> >I wonder how well this works.  I'll experiment with undergrads.
> 
> The goresponsiveness code is quite readable and might give a convenient starting point for some quick and dirty exploration...
> 
> >
> >-- Juliusz
> 
> -- 
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat